{"id":2623,"date":"2024-11-21T16:09:34","date_gmt":"2024-11-21T15:09:34","guid":{"rendered":"https:\/\/www.quisted.net\/?p=2623"},"modified":"2024-11-29T22:00:03","modified_gmt":"2024-11-29T21:00:03","slug":"is-is-interlevel-routing","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/","title":{"rendered":"IS-IS &#8211; Interlevel Routing"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-2633\" style=\"width: 840px; height: auto;\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/image-11.png\" alt=\"\" width=\"816\" height=\"180\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/image-11.png 816w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/image-11-300x66.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/image-11-768x169.png 768w\" sizes=\"auto, (max-width: 816px) 100vw, 816px\" \/><\/figure>\n<p>&nbsp;<\/p>\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Intermediate_System_to_Intermediate_System_IS-IS\" >Intermediate System to Intermediate System (IS-IS)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#IS-IS_Lab_Setup\" >IS-IS Lab Setup<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Labs_download\" >Labs download<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Router_Configurations\" >Router Configurations<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Configuration_L2_Routers_R1_R2\" >Configuration L2 Routers (R1 &amp; R2)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Configuration_L1L2_Routers_R3_R4\" >Configuration L1\/L2 Routers (R3 &amp; R4)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Configuration_L1_Routers_R9_R10\" >Configuration L1 Routers (R9 &amp; R10)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Router_Verifications\" >Router Verifications<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Verification_L2_Routers_R1_R2\" >Verification L2 Routers (R1 &amp; R2)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Verification_L1L2_Routers_R3_R4\" >Verification L1\/L2 Routers (R3 &amp; R4)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Verification_L1_Routers_R9_R10\" >Verification L1 Routers (R9 &amp; R10)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#IS-IS_Levels_Overview\" >IS-IS Levels Overview<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Interlevel_Routing_Concepts\" >Interlevel Routing Concepts<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Default_Routeleaking_behavior_visualized\" >Default Routeleaking behavior visualized<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#IS-IS_Level2_into_Level1_%E2%80%93_Route_leaking_configuration\" >IS-IS Level2 into Level1 &#8211; Route leaking configuration&nbsp;<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Configuration_L1L2_Routers_R3_R4-2\" >Configuration L1\/L2 Routers (R3 &amp; R4)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Verification_on_L1_Routers_R9_R10\" >Verification on L1 Routers (R9 &amp; R10)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/www.quisted.net\/index.php\/2024\/11\/21\/is-is-interlevel-routing\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Intermediate_System_to_Intermediate_System_IS-IS\"><\/span><span style=\"color: #800080;\">Intermediate System to Intermediate System (IS-IS)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<hr>\n<p><em>Intermediate System to Intermediate System<\/em> (IS-IS) is a dynamic link-state routing protocol widely used in large-scale networks, especially in service provider environments. One of its features is <strong>interlevel routing<\/strong>, which allows communication between IS-IS levels (Level 1 and Level 2). This post explains IS-IS interlevel routing and provides configuration examples to implement it in practical scenarios.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"IS-IS_Lab_Setup\"><\/span><span style=\"color: #800080;\"><a id=\"mplste02\"><\/a>IS-IS Lab Setup<br><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<hr>\n<p>&nbsp;<\/p>\n<table style=\"width: 100%; border-collapse: collapse; background-color: #fafafa;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\">\n<h3><span class=\"ez-toc-section\" id=\"Labs_download\"><\/span>Labs download<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h3><a href=\"https:\/\/drive.google.com\/drive\/folders\/1FXKNU4JTfNlRLcvNNs1yIsRakRVlbkUm?usp=sharing\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1794\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/10\/Lab-Icon.png\" alt=\"\" width=\"107\" height=\"92\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/10\/Lab-Icon.png 398w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/10\/Lab-Icon-300x258.png 300w\" sizes=\"auto, (max-width: 107px) 100vw, 107px\" \/><\/a><\/h3>\n<p><span style=\"font-size: revert; color: initial;\">The CML Lab is available for download <a href=\"https:\/\/drive.google.com\/drive\/folders\/1FXKNU4JTfNlRLcvNNs1yIsRakRVlbkUm?usp=sharing\">here<\/a>.<br><br><\/span><span style=\"font-size: revert; color: initial;\">1 &#8211; Lab <b>IS-IS Configuration<\/b><br><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Using Cisco\u2019s Modeling Labs (CML) I build the following IS-IS topology:<\/p>\n<ul>\n<li>2 x <span style=\"color: #76608a;\"><strong>L2 Router ( Top )&nbsp;<\/strong><\/span> (R1, R2) running <strong>XRv<\/strong> with <strong>IOS-XR.<\/strong><\/li>\n<li>2 x<strong><span style=\"color: #6a00ff;\"> L1L2 Router ( left )<\/span><\/strong> (R3, R4) running <strong>XRv<\/strong> with <strong>IOS-XR.<\/strong><\/li>\n<li>2 x<strong><span style=\"color: #6a00ff;\"> L1 Router ( left )<\/span><\/strong> (R9, R10) running <strong>IOS<\/strong> with <strong>IOSv.<\/strong><\/li>\n<li>2 x<span style=\"color: #1ba1e2;\"><strong> L1L2 Router ( Center )<\/strong><\/span> (R5, R6) running <strong>XRv<\/strong> with <strong>IOS-XR.<\/strong><\/li>\n<li>2 x<span style=\"color: #1ba1e2;\"><strong> L1 Router ( Center )<\/strong><\/span> (R11, R12) running <strong>IOS<\/strong> with <strong>IOSv.<\/strong><\/li>\n<li>2 x<span style=\"color: #d80073;\"><strong> L1L2 Router ( Right )<\/strong><\/span> (R7, R8) running <strong>XRv<\/strong> with <strong>IOS-XR.<\/strong><\/li>\n<li>2 x<span style=\"color: #d80073;\"><strong> L1 Router ( Right )<\/strong><\/span> (R13, R14) running <strong>IOS<\/strong> with <strong>IOSv.<\/strong><\/li>\n<\/ul>\n<p><strong><em>Logical View:<\/em><\/strong><\/p>\n<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/ISIS-Page-1.drawio-2.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2743 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/ISIS-Page-1.drawio-2.png\" alt=\"\" width=\"780\" height=\"508\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/ISIS-Page-1.drawio-2.png 780w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/ISIS-Page-1.drawio-2-300x195.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/ISIS-Page-1.drawio-2-768x500.png 768w\" sizes=\"auto, (max-width: 780px) 100vw, 780px\" \/><\/a><\/p>\n<p><strong><em>Physical View:<\/em><\/strong><\/p>\n<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2629 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical.png\" alt=\"\" width=\"1628\" height=\"948\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical.png 1628w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical-300x175.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical-1024x596.png 1024w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical-768x447.png 768w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/physical-1536x894.png 1536w\" sizes=\"auto, (max-width: 1628px) 100vw, 1628px\" \/><\/a><\/p>\n<p><!--more--><\/p>\n<p><em><strong><br><\/strong><\/em><strong><span style=\"color: #000000;\"><em>IP Addressing:<\/em><\/span><\/strong><br>The point-to-point links are configured with the following IP addressing scheme:<\/p>\n<ul>\n<li>&#8220;<strong>10.<span style=\"color: #1ba1e2;\">&lt;Lowest Router Id&gt;<\/span>.<span style=\"color: #76608a;\">&lt;Highest Router Id&gt;<\/span>.<span style=\"color: #800080;\"><span style=\"color: #6a00ff;\">&lt;Router Id&gt;.\/24<\/span>.&#8221;<\/span><\/strong><\/li>\n<\/ul>\n<p>For example the link between R1 and R 2 gives on P1: <strong><em>10.<span style=\"color: #1ba1e2;\">1<\/span>.<span style=\"color: #76608a;\">2<\/span>.<span style=\"color: #6a00ff;\">1<\/span>\/24<\/em> <\/strong>and on P2: <em><strong>10.<span style=\"color: #1ba1e2;\">1<\/span>.<span style=\"color: #76608a;\">2<\/span>.<span style=\"color: #3399ff;\">2<\/span>\/24<\/strong>.&nbsp;<\/em><\/p>\n\n\n\n<table id=\"tablepress-21\" class=\"tablepress tablepress-id-21\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Device<\/th><th class=\"column-2\">Function<\/th><th class=\"column-3\">Loopback address<\/th><th class=\"column-4\">Subnets<\/th><th class=\"column-5\">Image<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">R1<br \/>\n<\/td><td class=\"column-2\">L2 Router (Backbone)<\/td><td class=\"column-3\">1.1.1.1\/32<\/td><td class=\"column-4\">G0 10.1.3.1\/24<br \/>\nG1 10.1.5.1\/24<br \/>\nG2 10.1.7.1\/24<br \/>\nG5 10.1.2.1\/24<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">R2<\/td><td class=\"column-2\">L2 Router (Backbone)<\/td><td class=\"column-3\">2.2.2.2\/32<\/td><td class=\"column-4\">G0 10.2.4.2\/24<br \/>\nG1 10.2.6.2\/24<br \/>\nG2 10.2.8.2\/24<br \/>\nG5 10.1.2.2\/24<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">R3<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">3.3.3.3\/32<\/td><td class=\"column-4\">G0 10.1.3.3\/24<br \/>\nG2 10.3.4.3\/24<br \/>\nG3 10.3.9.3\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">R4<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">4.4.4.4\/32<\/td><td class=\"column-4\">G0 10.2.4.4\/24<br \/>\nG2 10.3.4.4\/24<br \/>\nG3 10.3.10.4\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">R5<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">5.5.5.5\/32<\/td><td class=\"column-4\">G0 10.1.5.5\/24<br \/>\nG2 10.5.6.5\/24<br \/>\nG3 10.5.11.5\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">R6<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">6.6.6.6\/32<\/td><td class=\"column-4\">G0 10.2.6.6\/24<br \/>\nG2 10.5.6.6\/24<br \/>\nG3 10.6.12.6\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">R7<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">7.7.7.7\/32<\/td><td class=\"column-4\">G0 10.1.7.7\/24<br \/>\nG2 10.7.8.7\/24<br \/>\nG3 10.7.13.7\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">R8<\/td><td class=\"column-2\">L1\/L2 Router<\/td><td class=\"column-3\">8.8.8.8\/32<\/td><td class=\"column-4\">G0 10.2.8.8\/24<br \/>\nG2 10.7.8.8\/24<br \/>\nG3 10.8.14.8\/24<br \/>\n<\/td><td class=\"column-5\">IOS XRV<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">R9<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">9.9.9.9\/32<\/td><td class=\"column-4\">G3 10.3.9.9\/24<br \/>\nG2 10.9.10.9\/24<br \/>\n<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">R10<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">10.10.10.10\/32<\/td><td class=\"column-4\">G3 10.4.10.10\/24<br \/>\nG2 10.9.10.10\/24<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<tr class=\"row-12\">\n\t<td class=\"column-1\">R11<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">11.11.11.11\/32<\/td><td class=\"column-4\">G3 10.3.11.11\/24<br \/>\nG2 10.11.12.11\/24<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<tr class=\"row-13\">\n\t<td class=\"column-1\">R12<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">12.12.12.12\/32<\/td><td class=\"column-4\">G3 10.6.12.12\/24<br \/>\nG2 10.11.12.12\/24<br \/>\n<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<tr class=\"row-14\">\n\t<td class=\"column-1\">R13<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">13.13.13.13\/32<\/td><td class=\"column-4\">G3 10.7.13.13\/24<br \/>\nG2 10.13.14.13\/24<br \/>\n<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<tr class=\"row-15\">\n\t<td class=\"column-1\">R14<\/td><td class=\"column-2\">L1 Router<\/td><td class=\"column-3\">14.14.14.14\/32<\/td><td class=\"column-4\">G3 10.8.14.14\/24<br \/>\nG2 10.13.14.14\/24<br \/>\n<\/td><td class=\"column-5\">IOSv<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-21 from cache -->\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2><span class=\"ez-toc-section\" id=\"Router_Configurations\"><\/span><span style=\"color: #800080;\">Router Configurations<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In this example I will focus on the top and left side of the topology.&nbsp;<\/p>\n<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2695 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft.png\" alt=\"\" width=\"1628\" height=\"948\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft.png 1628w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft-300x175.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft-1024x596.png 1024w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft-768x447.png 768w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/leftleft-1536x894.png 1536w\" sizes=\"auto, (max-width: 1628px) 100vw, 1628px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Configuration_L2_Routers_R1_R2\"><\/span><span style=\"color: #800080;\">Configuration L2 Routers (R1 &amp; R2)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"==== R1 &amp; R2  (L2)\n\nhostname R1\ninterface Loopback0\n ipv4 address 1.1.1.1 255.255.255.255\n!\ninterface GigabitEthernet0\/0\/0\/0\n ipv4 address 10.1.3.1 255.255.255.0\n!\ninterface GigabitEthernet0\/0\/0\/1\n ipv4 address 10.1.5.1 255.255.255.0\n!\ninterface GigabitEthernet0\/0\/0\/2\n ipv4 address 10.1.7.1 255.255.255.0\n \ninterface GigabitEthernet0\/0\/0\/5\n ipv4 address 10.1.2.1 255.255.255.0\n!\nrouter isis 1\n is-type level-2-only\n net 49.000.0000.0000.0001.00\n address-family ipv4 unicast\n  metric-style wide\n !\n interface Loopback0\n  passive\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/0\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/1\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/2\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/5\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n!\nend\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> R1 &amp; R2  (L2)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">hostname R1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.255<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">5.1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">7.1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> net <\/span><span style=\"color: #BD93F9\">49.000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0001.00<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  metric<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">style wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  passive<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">end<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Configuration_L1L2_Routers_R3_R4\"><\/span><span style=\"color: #800080;\">Configuration L1\/L2 Routers (R3 &amp; R4)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"==== R3,R4,R5,R6,R7,R8  (L1\/L2)\n\nhostname R3\ninterface Loopback0\n ipv4 address 3.3.3.3 255.255.255.255\n!\ninterface GigabitEthernet0\/0\/0\/0\n DESC TO R1 UP (L2) \n ipv4 address 10.1.3.3 255.255.255.0\n!\ninterface GigabitEthernet0\/0\/0\/2\n DESC TO R4 RIGHT (L1\/L2)\n ipv4 address 10.3.4.3 255.255.255.0\n!\ninterface GigabitEthernet0\/0\/0\/3\n DESC TO R9 DOWN (L1)\n ipv4 address 10.3.9.3 255.255.255.0\n!\nrouter isis 1\n net 49.001.0000.0000.0003.00\n address-family ipv4 unicast\n  metric-style wide\n !\n interface Loopback0\n  passive\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/0\n  circuit-type level-2-only\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/2\n  address-family ipv4 unicast\n  !\n !\n interface GigabitEthernet0\/0\/0\/3\n  circuit-type level-1\n  address-family ipv4 unicast\n  !\n !\n!\nend\n\n\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> R3,R4,R5,R6,R7,R8  (L1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">L2)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">hostname R3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.255<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">DESC<\/span><span style=\"color: #F8F8F2\"> TO R1 UP (L2) <\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">DESC<\/span><span style=\"color: #F8F8F2\"> TO R4 RIGHT (L1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">L2)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">DESC<\/span><span style=\"color: #F8F8F2\"> TO R9 DOWN (L1)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ipv4 address <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> net <\/span><span style=\"color: #BD93F9\">49.001<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0003.00<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  metric<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">style wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  passive<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">end<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Configuration_L1_Routers_R9_R10\"><\/span><span style=\"color: #800080;\">Configuration L1 Routers (R9 &amp; R10)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"==== R9,R10,R11,R12,R13,R14  (L1)\n\nhostname R9\n\ninterface Loopback0\n ip address 9.9.9.9 255.255.255.255\n ip router isis 1\n isis circuit-type level-1\n!\ninterface GigabitEthernet0\/2\n ip address 10.9.10.9 255.255.255.0\n ip router isis 1\n isis circuit-type level-1\n!\ninterface GigabitEthernet0\/3\n ip address 10.3.9.9 255.255.255.0\n ip router isis 1\n isis circuit-type level-1\n!\nrouter isis 1\n net 49.0001.0000.0000.0009.00\n is-type level-1\n metric-style wide\n!\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> R9,R10,R11,R12,R13,R14  (L1)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">hostname R9<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip address <\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.255<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> isis circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip address <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> isis circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">interface GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip address <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">255.255<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">255.0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> ip router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> isis circuit<\/span><span style=\"color: #FF79C6\">-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> net <\/span><span style=\"color: #BD93F9\">49.0001<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0009.00<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is-type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> metric<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">style wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2><span class=\"ez-toc-section\" id=\"Router_Verifications\"><\/span><span style=\"color: #800080;\">Router Verifications<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Verification_L2_Routers_R1_R2\"><\/span><span style=\"color: #800080;\">Verification L2 Routers (R1 &amp; R2)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"===== L2 Routers:\n\nRP\/0\/0\/CPU0:R1#sh isis interface brief\nThu Nov 21 10:54:53.132 UTC\n\nIS-IS 1 Interfaces\n    Interface      All     Adjs    Adj Topos  Adv Topos  CLNS   MTU    Prio\n                   OK    L1   L2    Run\/Cfg    Run\/Cfg                L1   L2\n-----------------  ---  ---------  ---------  ---------  ----  ----  --------\nLo0                Yes    -    -      0\/0        1\/1     No       -    -    -\nGi0\/0\/0\/0          Yes    -    1*     1\/1        1\/1     Up    1497    -   64\nGi0\/0\/0\/1          Yes    -    0      1\/1        1\/1     Up    1497    -   64\nGi0\/0\/0\/2          Yes    -    0      1\/1        1\/1     Up    1497    -   64\nGi0\/0\/0\/5          Yes    -    1*     1\/1        1\/1     Up    1497    -   64\n\n\nRP\/0\/0\/CPU0:R1#sh isis neighbors\nThu Nov 21 10:55:05.451 UTC\n\nIS-IS 1 neighbors:\nSystem Id      Interface        SNPA           State Holdtime Type IETF-NSF\nR2             Gi0\/0\/0\/5        5254.0006.6515 Up    25       L2   Capable\nR3             Gi0\/0\/0\/0        5254.0000.0d2a Up    28       L2   Capable\n\nRP\/0\/0\/CPU0:R1#sh isis protocol\nThu Nov 21 10:55:16.861 UTC\n\nIS-IS Router: 1\n  System Id: 0000.0000.0001\n  Instance Id: 0\n  IS Levels: level-2-only\n  Manual area address(es):\n    49.0000\n  Routing for area address(es):\n    49.0000\n  Non-stop forwarding: Disabled\n  Most recent startup mode: Cold Restart\n  TE connection status: Down\n  Topologies supported by IS-IS:\n    IPv4 Unicast\n      Level-2\n        Metric style (generate\/accept): Wide\/Wide\n        Metric: 10\n        ISPF status: Disabled\n      No protocols redistributed\n      Distance: 115\n      Advertise Passive Interface Prefixes Only: No\n  SRLB allocated: 0 - 0\n  SRGB not allocated\n  Interfaces supported by IS-IS:\n    Loopback0 is running passively (passive in configuration)\n    GigabitEthernet0\/0\/0\/0 is running actively (active in configuration)\n    GigabitEthernet0\/0\/0\/1 is running actively (active in configuration)\n    GigabitEthernet0\/0\/0\/2 is running actively (active in configuration)\n    GigabitEthernet0\/0\/0\/5 is running actively (active in configuration)\n\n\n\nRP\/0\/0\/CPU0:R1#sh ip route\nThu Nov 21 10:56:53.534 UTC\n\nCodes: C - connected, S - static, R - RIP, B - BGP, (&gt;) - Diversion path\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area\n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\n       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP\n       i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2\n       ia - IS-IS inter area, su - IS-IS summary null, * - candidate default\n       U - per-user static route, o - ODR, L - local, G  - DAGR, l - LISP\n       A - access\/subscriber, a - Application route\n       M - mobile route, r - RPL, t - Traffic Engineering, (!) - FRR Backup path\n\nGateway of last resort is not set\n\nL    1.1.1.1\/32 is directly connected, 03:17:14, Loopback0\ni L2 2.2.2.2\/32 [115\/20] via 10.1.2.2, 02:42:46, GigabitEthernet0\/0\/0\/5\ni L2 3.3.3.3\/32 [115\/10] via 10.1.3.3, 01:22:09, GigabitEthernet0\/0\/0\/0\ni L2 4.4.4.4\/32 [115\/20] via 10.1.3.3, 01:14:31, GigabitEthernet0\/0\/0\/0\ni L2 9.9.9.9\/32 [115\/30] via 10.1.3.3, 01:14:31, GigabitEthernet0\/0\/0\/0\nC    10.1.2.0\/24 is directly connected, 02:52:47, GigabitEthernet0\/0\/0\/5\nL    10.1.2.1\/32 is directly connected, 02:52:47, GigabitEthernet0\/0\/0\/5\nC    10.1.3.0\/24 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/0\nL    10.1.3.1\/32 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/0\ni L2 10.1.4.0\/24 [115\/30] via 10.1.3.3, 01:14:31, GigabitEthernet0\/0\/0\/0\nC    10.1.5.0\/24 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/1\nL    10.1.5.1\/32 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/1\nC    10.1.7.0\/24 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/2\nL    10.1.7.1\/32 is directly connected, 03:17:14, GigabitEthernet0\/0\/0\/2\ni L2 10.2.4.0\/24 [115\/20] via 10.1.2.2, 02:42:46, GigabitEthernet0\/0\/0\/5\ni L2 10.2.6.0\/24 [115\/20] via 10.1.2.2, 02:42:46, GigabitEthernet0\/0\/0\/5\ni L2 10.2.8.0\/24 [115\/20] via 10.1.2.2, 02:42:46, GigabitEthernet0\/0\/0\/5\ni L2 10.3.4.0\/24 [115\/20] via 10.1.3.3, 01:22:09, GigabitEthernet0\/0\/0\/0\ni L2 10.3.9.0\/24 [115\/20] via 10.1.3.3, 01:22:09, GigabitEthernet0\/0\/0\/0\ni L2 10.4.10.0\/24 [115\/30] via 10.1.3.3, 01:14:31, GigabitEthernet0\/0\/0\/0\ni L2 10.9.10.0\/24 [115\/30] via 10.1.3.3, 01:22:09, GigabitEthernet0\/0\/0\/0\ni L2 10.10.10.10\/32 [115\/40] via 10.1.3.3, 00:00:28, GigabitEthernet0\/0\/0\/0\n\n\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">=====<\/span><span style=\"color: #F8F8F2\"> L2 Routers:<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R1#sh isis interface brief<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">54<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">53.132<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> Interfaces<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    Interface      <\/span><span style=\"color: #FF79C6\">All<\/span><span style=\"color: #F8F8F2\">     Adjs    Adj Topos  Adv Topos  CLNS   MTU    Prio<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">                   OK    L1   L2    Run<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Cfg    Run<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Cfg                L1   L2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6272A4\">-----------------  ---  ---------  ---------  ---------  ----  ----  --------<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Lo0                Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     No       <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">     <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">     <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R1#sh isis neighbors<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">55<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">05.451<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> neighbors:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">System Id      Interface        SNPA           State Holdtime <\/span><span style=\"color: #FF79C6\">Type<\/span><span style=\"color: #F8F8F2\"> IETF<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">NSF<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R2             Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">5254.0006<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">6515<\/span><span style=\"color: #F8F8F2\"> Up    <\/span><span style=\"color: #BD93F9\">25<\/span><span style=\"color: #F8F8F2\">       L2   Capable<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R3             Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">5254.0000<\/span><span style=\"color: #F8F8F2\">.0d2a Up    <\/span><span style=\"color: #BD93F9\">28<\/span><span style=\"color: #F8F8F2\">       L2   Capable<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R1#sh isis protocol<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">55<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">16.861<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> Router: <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  System Id: <\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0001<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Instance Id: <\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  <\/span><span style=\"color: #FF79C6\">IS<\/span><span style=\"color: #F8F8F2\"> Levels: <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">only<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Manual area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">49.0000<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Routing <\/span><span style=\"color: #FF79C6\">for<\/span><span style=\"color: #F8F8F2\"> area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">49.0000<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Non<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">stop forwarding: Disabled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Most recent startup <\/span><span style=\"color: #FF79C6\">mode<\/span><span style=\"color: #F8F8F2\">: Cold Restart<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  TE connection status: Down<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Topologies supported by <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    IPv4 Unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #FF79C6\">Level-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric style (generate<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">accept): Wide<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric: <\/span><span style=\"color: #BD93F9\">10<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        ISPF status: Disabled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      No protocols redistributed<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      Distance: <\/span><span style=\"color: #BD93F9\">115<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      Advertise Passive Interface Prefixes Only: No<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  SRLB allocated: <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  SRGB <\/span><span style=\"color: #FF79C6\">not<\/span><span style=\"color: #F8F8F2\"> allocated<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Interfaces supported by <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    Loopback0 <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running passively (passive <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R1#sh ip route<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">53.534<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Codes: <\/span><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> connected, S <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> static, R <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> RIP, B <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> BGP, (<\/span><span style=\"color: #FF79C6\">&gt;<\/span><span style=\"color: #F8F8F2\">) <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Diversion <\/span><span style=\"color: #8BE9FD\">path<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       D <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EIGRP, EX <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EIGRP external, O <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF, IA <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF inter area<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       N1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF NSSA external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, N2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF NSSA external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       E1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, E2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">, E <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EGP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       i <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> ISIS, L1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, L2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       ia <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> inter area, su <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> summary <\/span><span style=\"color: #BD93F9\">null<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> candidate <\/span><span style=\"color: #FF79C6\">default<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       U <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> per<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #8BE9FD\">user<\/span><span style=\"color: #F8F8F2\"> static route, o <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> ODR, L <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> local, G  <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> DAGR, l <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> LISP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       A <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> access<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">subscriber, a <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Application route<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       M <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> mobile route, r <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> RPL, t <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Traffic Engineering, (!) <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> FRR Backup <\/span><span style=\"color: #8BE9FD\">path<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gateway <\/span><span style=\"color: #FF79C6\">of<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #8BE9FD\">last<\/span><span style=\"color: #F8F8F2\"> resort <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">not<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">set<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">42<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">46<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">09<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">31<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">31<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">52<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">47<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">52<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">47<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">31<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">5.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">5.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">7.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">7.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">42<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">46<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">6.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">42<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">46<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">8.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">42<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">46<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">5<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">09<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">09<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">31<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">09<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">40<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">28<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Verification_L1L2_Routers_R3_R4\"><\/span><span style=\"color: #800080;\">Verification L1\/L2 Routers (R3 &amp; R4)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"===== L1\/L2 Routers:\n\nRP\/0\/0\/CPU0:R3#sh isis interface brief\nThu Nov 21 10:56:33.836 UTC\n\nIS-IS 1 Interfaces\n    Interface      All     Adjs    Adj Topos  Adv Topos  CLNS   MTU    Prio\n                   OK    L1   L2    Run\/Cfg    Run\/Cfg                L1   L2\n-----------------  ---  ---------  ---------  ---------  ----  ----  --------\nLo0                Yes    -    -      0\/0        1\/1     No       -    -    -\nGi0\/0\/0\/0          Yes    -    1      1\/1        1\/1     Up    1497    -   64\nGi0\/0\/0\/2          Yes    1*   1*     1\/1        1\/1     Up    1497   64   64\nGi0\/0\/0\/3          Yes    1*   -      1\/1        1\/1     Up    1497   64    -\n\n\nRP\/0\/0\/CPU0:R3#sh isis neighbors\nThu Nov 21 10:56:02.668 UTC\n\nIS-IS 1 neighbors:\nSystem Id      Interface        SNPA           State Holdtime Type IETF-NSF\nR4             Gi0\/0\/0\/2        5254.0006.c602 Up    24       L1L2 Capable\nR9             Gi0\/0\/0\/3        5254.000b.6b54 Up    23       L1   Capable\nR1             Gi0\/0\/0\/0        5254.0016.8eeb Up    9        L2   Capable\n\n\nRP\/0\/0\/CPU0:R3#sh isis protocol\nThu Nov 21 10:58:38.648 UTC\n\nIS-IS Router: 1\n  System Id: 0000.0000.0003\n  Instance Id: 0\n  IS Levels: level-1-2\n  Manual area address(es):\n    49.0001\n  Routing for area address(es):\n    49.0001\n  Non-stop forwarding: Disabled\n  Most recent startup mode: Cold Restart\n  TE connection status: Down\n  Topologies supported by IS-IS:\n    IPv4 Unicast\n      Level-1\n        Metric style (generate\/accept): Wide\/Wide\n        Metric: 10\n        ISPF status: Disabled\n      Level-2\n        Metric style (generate\/accept): Wide\/Wide\n        Metric: 10\n        ISPF status: Disabled\n      No protocols redistributed\n      Distance: 115\n      Advertise Passive Interface Prefixes Only: No\n  SRLB allocated: 0 - 0\n  SRGB not allocated\n  Interfaces supported by IS-IS:\n    Loopback0 is running passively (passive in configuration)\n    GigabitEthernet0\/0\/0\/0 is running actively (active in configuration)\n    GigabitEthernet0\/0\/0\/2 is running actively (active in configuration)\n    GigabitEthernet0\/0\/0\/3 is running actively (active in configuration)\n\n\nRP\/0\/0\/CPU0:R3#sh ip route\n\nThu Nov 21 10:58:18.309 UTC\nCodes: C - connected, S - static, R - RIP, B - BGP, (&gt;) - Diversion path\n       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area\n       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2\n       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP\n       i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2\n       ia - IS-IS inter area, su - IS-IS summary null, * - candidate default\n       U - per-user static route, o - ODR, L - local, G  - DAGR, l - LISP\n       A - access\/subscriber, a - Application route\n       M - mobile route, r - RPL, t - Traffic Engineering, (!) - FRR Backup path\n\nGateway of last resort is not set\n\ni L2 1.1.1.1\/32 [115\/10] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\ni L2 2.2.2.2\/32 [115\/30] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\nL    3.3.3.3\/32 is directly connected, 02:37:17, Loopback0\ni L1 4.4.4.4\/32 [115\/10] via 10.3.4.4, 01:15:00, GigabitEthernet0\/0\/0\/2\ni L1 9.9.9.9\/32 [115\/20] via 10.3.9.9, 01:22:38, GigabitEthernet0\/0\/0\/3\ni L2 10.1.2.0\/24 [115\/20] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\nC    10.1.3.0\/24 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/0\nL    10.1.3.3\/32 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/0\ni L2 10.1.4.0\/24 [115\/20] via 10.3.4.4, 01:15:00, GigabitEthernet0\/0\/0\/2\ni L2 10.1.5.0\/24 [115\/20] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\ni L2 10.1.7.0\/24 [115\/20] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\ni L2 10.2.4.0\/24 [115\/30] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\ni L2 10.2.6.0\/24 [115\/30] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\ni L2 10.2.8.0\/24 [115\/30] via 10.1.3.1, 01:22:38, GigabitEthernet0\/0\/0\/0\nC    10.3.4.0\/24 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/2\nL    10.3.4.3\/32 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/2\nC    10.3.9.0\/24 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/3\nL    10.3.9.3\/32 is directly connected, 02:37:17, GigabitEthernet0\/0\/0\/3\ni L1 10.4.10.0\/24 [115\/20] via 10.3.4.4, 01:15:00, GigabitEthernet0\/0\/0\/2\ni L1 10.9.10.0\/24 [115\/20] via 10.3.9.9, 01:22:38, GigabitEthernet0\/0\/0\/3\ni L1 10.10.10.10\/32 [115\/30] via 10.3.4.4, 00:00:57, GigabitEthernet0\/0\/0\/2\n                    [115\/30] via 10.3.9.9, 00:00:57, GigabitEthernet0\/0\/0\/3\n\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">=====<\/span><span style=\"color: #F8F8F2\"> L1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">L2 Routers:<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R3#sh isis interface brief<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">33.836<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> Interfaces<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    Interface      <\/span><span style=\"color: #FF79C6\">All<\/span><span style=\"color: #F8F8F2\">     Adjs    Adj Topos  Adv Topos  CLNS   MTU    Prio<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">                   OK    L1   L2    Run<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Cfg    Run<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Cfg                L1   L2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6272A4\">-----------------  ---  ---------  ---------  ---------  ----  ----  --------<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Lo0                Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     No       <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">     <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\">          Yes    <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">     Up    <\/span><span style=\"color: #BD93F9\">1497<\/span><span style=\"color: #F8F8F2\">   <\/span><span style=\"color: #BD93F9\">64<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #FF79C6\">-<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R3#sh isis neighbors<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">02.668<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> neighbors:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">System Id      Interface        SNPA           State Holdtime <\/span><span style=\"color: #FF79C6\">Type<\/span><span style=\"color: #F8F8F2\"> IETF<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">NSF<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R4             Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">5254.0006<\/span><span style=\"color: #F8F8F2\">.c602 Up    <\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\">       L1L2 Capable<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R9             Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">5254<\/span><span style=\"color: #F8F8F2\">.000b.6b54 Up    <\/span><span style=\"color: #BD93F9\">23<\/span><span style=\"color: #F8F8F2\">       L1   Capable<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R1             Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">5254.0016<\/span><span style=\"color: #F8F8F2\">.8eeb Up    <\/span><span style=\"color: #BD93F9\">9<\/span><span style=\"color: #F8F8F2\">        L2   Capable<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R3#sh isis protocol<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">58<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38.648<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> Router: <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  System Id: <\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0003<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Instance Id: <\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  <\/span><span style=\"color: #FF79C6\">IS<\/span><span style=\"color: #F8F8F2\"> Levels: <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Manual area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">49.0001<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Routing <\/span><span style=\"color: #FF79C6\">for<\/span><span style=\"color: #F8F8F2\"> area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">49.0001<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Non<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">stop forwarding: Disabled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Most recent startup <\/span><span style=\"color: #FF79C6\">mode<\/span><span style=\"color: #F8F8F2\">: Cold Restart<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  TE connection status: Down<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Topologies supported by <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    IPv4 Unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #FF79C6\">Level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric style (generate<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">accept): Wide<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric: <\/span><span style=\"color: #BD93F9\">10<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        ISPF status: Disabled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #FF79C6\">Level-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric style (generate<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">accept): Wide<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">Wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Metric: <\/span><span style=\"color: #BD93F9\">10<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        ISPF status: Disabled<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      No protocols redistributed<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      Distance: <\/span><span style=\"color: #BD93F9\">115<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      Advertise Passive Interface Prefixes Only: No<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  SRLB allocated: <\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  SRGB <\/span><span style=\"color: #FF79C6\">not<\/span><span style=\"color: #F8F8F2\"> allocated<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Interfaces supported by <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    Loopback0 <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running passively (passive <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> running actively (active <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> configuration)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">RP<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">CPU0:R3#sh ip route<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Thu Nov <\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">58<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">18.309<\/span><span style=\"color: #F8F8F2\"> UTC<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Codes: <\/span><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> connected, S <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> static, R <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> RIP, B <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> BGP, (<\/span><span style=\"color: #FF79C6\">&gt;<\/span><span style=\"color: #F8F8F2\">) <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Diversion <\/span><span style=\"color: #8BE9FD\">path<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       D <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EIGRP, EX <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EIGRP external, O <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF, IA <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF inter area<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       N1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF NSSA external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, N2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF NSSA external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       E1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, E2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> OSPF external <\/span><span style=\"color: #FF79C6\">type<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">, E <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> EGP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       i <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> ISIS, L1 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">, L2 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       ia <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> inter area, su <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> summary <\/span><span style=\"color: #BD93F9\">null<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> candidate <\/span><span style=\"color: #FF79C6\">default<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       U <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> per<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #8BE9FD\">user<\/span><span style=\"color: #F8F8F2\"> static route, o <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> ODR, L <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> local, G  <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> DAGR, l <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> LISP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       A <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> access<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #F8F8F2\">subscriber, a <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Application route<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">       M <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> mobile route, r <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> RPL, t <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> Traffic Engineering, (!) <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> FRR Backup <\/span><span style=\"color: #8BE9FD\">path<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gateway <\/span><span style=\"color: #FF79C6\">of<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #8BE9FD\">last<\/span><span style=\"color: #F8F8F2\"> resort <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">not<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">set<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.2<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1 <\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">15<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1 <\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">2.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">15<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">5.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">7.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">6.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L2 <\/span><span style=\"color: #BD93F9\">10.2<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">8.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.1<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.3<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">    <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L    <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, <\/span><span style=\"color: #BD93F9\">02<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">37<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">17<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1 <\/span><span style=\"color: #BD93F9\">10.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">15<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1 <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">22<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">38<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1 <\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">57<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">                    [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">57<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Verification_L1_Routers_R9_R10\"><\/span><span style=\"color: #800080;\">Verification L1 Routers (R9 &amp; R10)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"===== L1 Routers:\n\nR10#show isis neighbors\n\nTag 1:\nSystem Id       Type Interface     IP Address      State Holdtime Circuit Id\nR6              L1   Gi0\/3         10.6.10.6       UP    8        R6.05\nR9              L1   Gi0\/2         10.9.10.9       UP    23       R10.01\nR10#\nR10#show isis pro\nR10#show isis protocol\n\nTag 1:\nIS-IS Router: 1\n  System Id: 0000.0000.0010.00  IS-Type: level-1\n  Manual area address(es):\n        49.0001\n  Routing for area address(es):\n        49.0001\n  Interfaces supported by IS-IS:\n        GigabitEthernet0\/3 - IP\n        GigabitEthernet0\/2 - IP\n        Loopback0 - IP\n  Redistribute:\n    static (on by default)\n  Distance for L2 CLNS routes: 110\n  RRR level: none\n  Generate narrow metrics: none\n  Accept narrow metrics:   none\n  Generate wide metrics:   level-1-2\n  Accept wide metrics:     level-1-2\n\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">=====<\/span><span style=\"color: #F8F8F2\"> L1 Routers:<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R10#show isis neighbors<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Tag <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">System Id       <\/span><span style=\"color: #FF79C6\">Type<\/span><span style=\"color: #F8F8F2\"> Interface     IP Address      State Holdtime Circuit Id<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R6              L1   Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\">         <\/span><span style=\"color: #BD93F9\">10.6<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.6<\/span><span style=\"color: #F8F8F2\">       UP    <\/span><span style=\"color: #BD93F9\">8<\/span><span style=\"color: #F8F8F2\">        R6.<\/span><span style=\"color: #BD93F9\">05<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R9              L1   Gi0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\">         <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">       UP    <\/span><span style=\"color: #BD93F9\">23<\/span><span style=\"color: #F8F8F2\">       R10.<\/span><span style=\"color: #BD93F9\">01<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R10#<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R10#show isis pro<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R10#show isis protocol<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Tag <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> Router: <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  System Id: <\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0010.00<\/span><span style=\"color: #F8F8F2\">  <\/span><span style=\"color: #FF79C6\">IS-Type<\/span><span style=\"color: #F8F8F2\">: <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Manual area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">49.0001<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Routing <\/span><span style=\"color: #FF79C6\">for<\/span><span style=\"color: #F8F8F2\"> area address(es):<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">49.0001<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Interfaces supported by <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\">:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> IP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> IP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">        Loopback0 <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> IP<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Redistribute:<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    static (<\/span><span style=\"color: #FF79C6\">on<\/span><span style=\"color: #F8F8F2\"> by <\/span><span style=\"color: #FF79C6\">default<\/span><span style=\"color: #F8F8F2\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Distance <\/span><span style=\"color: #FF79C6\">for<\/span><span style=\"color: #F8F8F2\"> L2 CLNS routes: <\/span><span style=\"color: #BD93F9\">110<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  RRR <\/span><span style=\"color: #FF79C6\">level<\/span><span style=\"color: #F8F8F2\">: none<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Generate narrow metrics: none<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Accept narrow metrics:   none<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Generate wide metrics:   <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  Accept wide metrics:     <\/span><span style=\"color: #FF79C6\">level-<\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n<\/div><\/div>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"IS-IS_Levels_Overview\"><\/span><span style=\"color: #800080;\">IS-IS Levels Overview<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>IS-IS operates on a hierarchical two-level structure designed to enhance scalability and network organization. The two levels, <strong>Level 1 (L1)<\/strong> and <strong>Level 2 (L2)<\/strong>, serve distinct roles.<\/p>\n<p>Level 1 handles <strong>intra-area routing<\/strong>, where routers within the same area exchange topology information and compute routes only for that area. Level 1 routers are unaware of destinations outside their area and rely on Level 1\/Level 2 (L1\/L2) routers to forward traffic destined for other areas. This division simplifies the routing process within an area, reducing the size of the Link-State Database (LSDB) that each Level 1 router needs to maintain.<\/p>\n<p>Level 2, on the other hand, serves as the <strong>backbone of the network<\/strong> and facilitates inter-area routing. Routers in Level 2 exchange topology information about all areas but do not have detailed knowledge of intra-area routes in Level 1.<\/p>\n<p>L1\/L2 routers act as bridges between these levels, connecting Level 1 areas to the Level 2 backbone. They advertise default routes into their respective Level 1 areas, allowing routers within those areas to reach external destinations via Level 2. This hierarchical structure improves scalability by containing routing information within levels while maintaining connectivity across the network.<\/p>\n<ol>\n<li><strong>Level 1 (L1)<\/strong>: Used for intra-area routing, where routers only exchange routing information with devices within the same area.<\/li>\n<li><strong>Level 2 (L2)<\/strong>: Used for inter-area routing, where routers act as the backbone, connecting different Level 1 areas.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Interlevel_Routing_Concepts\"><\/span><span style=\"color: #800080;\">Interlevel Routing Concepts<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Interlevel routing in IS-IS is the mechanism that allows communication between Level 1 (intra-area) and Level 2 (inter-area) domains. At its core, it relies on <strong>L1\/L2 routers<\/strong>, which serve as gateways connecting Level 1 areas to the Level 2 backbone. These routers facilitate traffic flow from Level 1 routers to destinations outside their area by advertising a default route into the Level 1 area. This default route simplifies the routing tables of Level 1 routers by directing any unknown destination traffic to the nearest L1\/L2 router, which then forwards it through the Level 2 backbone to its destination.<\/p>\n<p>Another critical aspect of interlevel routing is <strong>route leaking<\/strong>, which provides finer control over the information shared between levels. By default, IS-IS does not advertise Level 1 routes into Level 2 or vice versa to maintain scalability and avoid unnecessary routing table growth. However, in certain scenarios, specific Level 1 routes can be selectively &#8220;leaked&#8221; into Level 2 to optimize traffic flows or reduce reliance on default routing. Similarly, key Level 2 routes can be advertised into Level 1 to improve local reachability. These interlevel routing concepts enable IS-IS to maintain a scalable and efficient hierarchy while offering flexibility for advanced routing policies.<\/p>\n<ol>\n<li>\n<p><strong>L1\/L2 Routers<\/strong>:<\/p>\n<ul>\n<li>Act as a bridge between Level 1 and Level 2.<\/li>\n<li>Advertise default routes from Level 2 into Level 1 areas, enabling L1 routers to reach destinations outside their area.<\/li>\n<\/ul>\n<\/li>\n<li>\n<p><strong>Route Leaking<\/strong>:<\/p>\n<ul>\n<li>By default, L2 routes are not advertised into L1.<\/li>\n<li><strong>Route leaking<\/strong> enables specific prefixes from Level 2 to be advertised into Level 1.<\/li>\n<li>Useful for reducing dependency on default routing or optimizing traffic flows.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"Default_Routeleaking_behavior_visualized\"><\/span>Default Routeleaking behavior visualized<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong><em>Default L1 -&gt; L2 Leaking Allowed;<\/em><\/strong><\/p>\n<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L1L2-2.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2735 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L1L2-2.png\" alt=\"\" width=\"779\" height=\"508\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L1L2-2.png 779w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L1L2-2-300x196.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L1L2-2-768x501.png 768w\" sizes=\"auto, (max-width: 779px) 100vw, 779px\" \/><\/a><\/p>\n<p><strong><em>Default L2 -&gt; L1 Leaking Blocked;<br><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L2L1-2.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2736 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L2L1-2.png\" alt=\"\" width=\"779\" height=\"508\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L2L1-2.png 779w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L2L1-2-300x196.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Leaking-L2L1-2-768x501.png 768w\" sizes=\"auto, (max-width: 779px) 100vw, 779px\" \/><\/a><\/em><\/strong><\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2><span class=\"ez-toc-section\" id=\"IS-IS_Level2_into_Level1_%E2%80%93_Route_leaking_configuration\"><\/span><span style=\"color: #800080;\">IS-IS Level2 into Level1 &#8211; Route leaking configuration&nbsp;<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In this example I will focus on the top and left side of the topology. Here I will route leake the Loopback of <strong>Router1<\/strong> (1.1.1.1\/32 , <em>Level2 route<\/em>) into area1 (<em>Level1<\/em>, bottom left). While the L1\/L2 Routers already provide routing between levels with a default route, this will also advertise the L2 route in the L1 area.<\/p>\n<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1.png\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2721 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1.png\" alt=\"\" width=\"1628\" height=\"948\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1.png 1628w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1-300x175.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1-1024x596.png 1024w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1-768x447.png 768w, https:\/\/www.quisted.net\/wp-content\/uploads\/2024\/11\/Routeleak-1-1536x894.png 1536w\" sizes=\"auto, (max-width: 1628px) 100vw, 1628px\" \/><\/a><\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Configuration_L1L2_Routers_R3_R4-2\"><\/span><span style=\"color: #800080;\">Configuration L1\/L2 Routers (R3 &amp; R4)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"==== R3 &amp; R4\n\nprefix-set PREFIX-LIST                                            ==== Prefix-set with the loopback of R1\n  1.1.1.1\/32\nend-set\n!\n\nroute-policy LEAK-LVL2-LVL1                                       ==== Route-policy \n  if destination in PREFIX-LIST then\n    pass\n  endif\nend-policy\n!\n\nrouter isis 1\n net 49.001.0000.0000.0003.00\n address-family ipv4 unicast\n  metric-style wide\n  propagate level 2 into level 1 route-policy LEAK-LVL2-LVL1     ==== Propagate L2 into L2\n !\n interface Loopback0\n  passive\n  address-family ipv4 unicast\n  !\n !\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> R3 &amp; R4<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">prefix<\/span><span style=\"color: #FF79C6\">-set<\/span><span style=\"color: #F8F8F2\"> PREFIX<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LIST                                            <\/span><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> Prefix<\/span><span style=\"color: #FF79C6\">-set<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">with<\/span><span style=\"color: #F8F8F2\"> the loopback <\/span><span style=\"color: #FF79C6\">of<\/span><span style=\"color: #F8F8F2\"> R1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  <\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">end-set<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">route<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">policy LEAK<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LVL2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LVL1                                       <\/span><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> Route<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">policy <\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  <\/span><span style=\"color: #FF79C6\">if<\/span><span style=\"color: #F8F8F2\"> destination <\/span><span style=\"color: #FF79C6\">in<\/span><span style=\"color: #F8F8F2\"> PREFIX<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LIST <\/span><span style=\"color: #FF79C6\">then<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">    pass<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  endif<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">end-<\/span><span style=\"color: #F8F8F2\">policy<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">!<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">router isis <\/span><span style=\"color: #BD93F9\">1<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> net <\/span><span style=\"color: #BD93F9\">49.001<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0000.0000<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0003.00<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  metric<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">style wide<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  propagate <\/span><span style=\"color: #FF79C6\">level<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">into<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">level<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> route<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">policy LEAK<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LVL2<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LVL1     <\/span><span style=\"color: #FF79C6\">====<\/span><span style=\"color: #F8F8F2\"> Propagate L2 <\/span><span style=\"color: #FF79C6\">into<\/span><span style=\"color: #F8F8F2\"> L2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> interface Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  passive<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  address<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">family ipv4 unicast<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">  !<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\"> !<\/span><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Verification_on_L1_Routers_R9_R10\"><\/span><span style=\"color: #800080;\">Verification on L1 Routers (R9 &amp; R10)<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-kevinbatdorf-code-block-pro\" data-code-block-pro-font-family=\"Code-Pro-JetBrains-Mono\" style=\"font-size:.75rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span role=\"button\" tabindex=\"0\" data-code=\"=========== BEFORE ROUTE-LEAK\n\nR9#sh ip route\n-- \nGateway of last resort is 10.3.9.3 to network 0.0.0.0\n\ni*L1  0.0.0.0\/0 [115\/10] via 10.3.9.3, 01:08:56, GigabitEthernet0\/3\n      3.0.0.0\/32 is subnetted, 1 subnets\ni L1     3.3.3.3 [115\/10] via 10.3.9.3, 01:08:56, GigabitEthernet0\/3\n      4.0.0.0\/32 is subnetted, 1 subnets\ni L1     4.4.4.4 [115\/20] via 10.3.9.3, 01:01:21, GigabitEthernet0\/3\n      9.0.0.0\/32 is subnetted, 1 subnets\nC        9.9.9.9 is directly connected, Loopback0\n      10.0.0.0\/8 is variably subnetted, 6 subnets, 2 masks\ni L1     10.3.4.0\/24 [115\/20] via 10.3.9.3, 01:08:56, GigabitEthernet0\/3\nC        10.3.9.0\/24 is directly connected, GigabitEthernet0\/3\nL        10.3.9.9\/32 is directly connected, GigabitEthernet0\/3\ni L1     10.4.10.0\/24 [115\/30] via 10.3.9.3, 01:01:21, GigabitEthernet0\/3\nC        10.9.10.0\/24 is directly connected, GigabitEthernet0\/2\nL        10.9.10.9\/32 is directly connected, GigabitEthernet0\/2\ni L1     10.10.10.10\/32 [115\/20] via 10.9.10.10, 00:03:32, GigabitEthernet0\/2\n\n\n=========== AFTER ROUTE-LEAK \n\nR9#sh ip route\n----\nGateway of last resort is 10.3.9.3 to network 0.0.0.0\n\ni*L1  0.0.0.0\/0 [115\/10] via 10.3.9.3, 01:24:54, GigabitEthernet0\/3\n      1.0.0.0\/32 is subnetted, 1 subnets\ni ia     1.1.1.1 [115\/20] via 10.3.9.3, 00:14:59, GigabitEthernet0\/3     ===== R1 L0 ( ia - IS-IS inter area )  \n      3.0.0.0\/32 is subnetted, 1 subnets\ni L1     3.3.3.3 [115\/10] via 10.3.9.3, 01:24:54, GigabitEthernet0\/3\n      4.0.0.0\/32 is subnetted, 1 subnets\ni L1     4.4.4.4 [115\/20] via 10.9.10.10, 00:03:32, GigabitEthernet0\/2\n                 [115\/20] via 10.3.9.3, 00:03:32, GigabitEthernet0\/3\n      9.0.0.0\/32 is subnetted, 1 subnets\nC        9.9.9.9 is directly connected, Loopback0\n      10.0.0.0\/8 is variably subnetted, 7 subnets, 2 masks\ni L1     10.3.4.0\/24 [115\/20] via 10.3.9.3, 01:24:54, GigabitEthernet0\/3\nC        10.3.9.0\/24 is directly connected, GigabitEthernet0\/3\nL        10.3.9.9\/32 is directly connected, GigabitEthernet0\/3\ni L1     10.4.10.0\/24 [115\/20] via 10.9.10.10, 00:03:32, GigabitEthernet0\/2\nC        10.9.10.0\/24 is directly connected, GigabitEthernet0\/2\nL        10.9.10.9\/32 is directly connected, GigabitEthernet0\/2\ni L1     10.10.10.10\/32 [115\/20] via 10.9.10.10, 00:03:32, GigabitEthernet0\/2\n\n\" style=\"color:#F8F8F2;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dracula\" style=\"background-color: #282A36\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #FF79C6\">===========<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">BEFORE<\/span><span style=\"color: #F8F8F2\"> ROUTE<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LEAK<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R9#sh ip route<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6272A4\">-- <\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gateway <\/span><span style=\"color: #FF79C6\">of<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #8BE9FD\">last<\/span><span style=\"color: #F8F8F2\"> resort <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\"> to network <\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">L1  <\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">08<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">3.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">08<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">8<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> variably subnetted, <\/span><span style=\"color: #BD93F9\">6<\/span><span style=\"color: #F8F8F2\"> subnets, <\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> masks<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">08<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">56<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L        <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">30<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">21<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L        <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">===========<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">AFTER<\/span><span style=\"color: #F8F8F2\"> ROUTE<\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\">LEAK <\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">R9#sh ip route<\/span><\/span>\n<span class=\"line\"><span style=\"color: #6272A4\">----<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">Gateway <\/span><span style=\"color: #FF79C6\">of<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #8BE9FD\">last<\/span><span style=\"color: #F8F8F2\"> resort <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\"> to network <\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i<\/span><span style=\"color: #FF79C6\">*<\/span><span style=\"color: #F8F8F2\">L1  <\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">0<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">54<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">1.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i ia     <\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">1.1<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">14<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">59<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><span style=\"color: #F8F8F2\">     <\/span><span style=\"color: #FF79C6\">=====<\/span><span style=\"color: #F8F8F2\"> R1 L0 ( ia <\/span><span style=\"color: #FF79C6\">-<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">IS-IS<\/span><span style=\"color: #F8F8F2\"> inter area )  <\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">3.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">3.3<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">10<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">54<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.4<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">                 [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> subnetted, <\/span><span style=\"color: #BD93F9\">1<\/span><span style=\"color: #F8F8F2\"> subnets<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, Loopback0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">      <\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">0.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">8<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> variably subnetted, <\/span><span style=\"color: #BD93F9\">7<\/span><span style=\"color: #F8F8F2\"> subnets, <\/span><span style=\"color: #BD93F9\">2<\/span><span style=\"color: #F8F8F2\"> masks<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">4.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.3<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">01<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">54<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L        <\/span><span style=\"color: #BD93F9\">10.3<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">9.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">3<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.4<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #FF79C6\">C<\/span><span style=\"color: #F8F8F2\">        <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">24<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">L        <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> <\/span><span style=\"color: #FF79C6\">is<\/span><span style=\"color: #F8F8F2\"> directly connected, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><span style=\"color: #F8F8F2\">i L1     <\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\"> [<\/span><span style=\"color: #BD93F9\">115<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">20<\/span><span style=\"color: #F8F8F2\">] via <\/span><span style=\"color: #BD93F9\">10.9<\/span><span style=\"color: #F8F8F2\">.<\/span><span style=\"color: #BD93F9\">10.10<\/span><span style=\"color: #F8F8F2\">, <\/span><span style=\"color: #BD93F9\">00<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">03<\/span><span style=\"color: #F8F8F2\">:<\/span><span style=\"color: #BD93F9\">32<\/span><span style=\"color: #F8F8F2\">, GigabitEthernet0<\/span><span style=\"color: #FF79C6\">\/<\/span><span style=\"color: #BD93F9\">2<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><\/span><\/code><\/pre><\/div>\n<\/div><\/div>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Summary\"><\/span><strong>Summary<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>By default, L1 routers in IS-IS rely on a default route from L1\/L2 routers for external connectivity. L2 routes are not advertised into L1 areas unless explicitly configured via route leaking. This design minimizes routing table size and computational overhead in L1 areas, improving scalability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Intermediate System to Intermediate System (IS-IS) Intermediate System to Intermediate System (IS-IS) is a dynamic link-state routing protocol widely used in large-scale networks, especially in service provider environments. One of its features is interlevel routing, which allows communication between IS-IS levels (Level 1 and Level 2). This post explains IS-IS interlevel routing and provides [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2633,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[160,6,8,127],"tags":[153,152,154],"class_list":["post-2623","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-is-is","category-labs","category-route","category-sp","tag-interlevel","tag-isis","tag-labs"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/2623","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/comments?post=2623"}],"version-history":[{"count":114,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/2623\/revisions"}],"predecessor-version":[{"id":2935,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/2623\/revisions\/2935"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media\/2633"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=2623"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=2623"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=2623"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}