{"id":593,"date":"2018-02-01T12:17:29","date_gmt":"2018-02-01T11:17:29","guid":{"rendered":"http:\/\/www.quisted.net\/?p=593"},"modified":"2018-02-01T12:17:29","modified_gmt":"2018-02-01T11:17:29","slug":"datacenter-design-iii-stp-high-availability","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/02\/01\/datacenter-design-iii-stp-high-availability\/","title":{"rendered":"Datacenter Design III (STP, High availability, Failover timers)"},"content":{"rendered":"<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-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/02\/01\/datacenter-design-iii-stp-high-availability\/#STP_in_the_datacenter\" >STP in the datacenter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/02\/01\/datacenter-design-iii-stp-high-availability\/#High_Availability\" >High Availability<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><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\/2018\/02\/01\/datacenter-design-iii-stp-high-availability\/#Expectations_and_Failover_Timers\" >Expectations and Failover Timers<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"STP_in_the_datacenter\"><\/span><span style=\"color: #3366ff;\">STP in the datacenter<\/span><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p><strong>STP logical interfaces maximum<\/strong><\/p>\n<ul>\n<li>RSTP \/ MST reach topology maximus. Switch specs logical \/ virtual interfaces.<strong>\u00a0 (6500\/ 6748)<\/strong>\n<ul>\n<li><strong>Logical interfaces<\/strong> == ((<strong><span style=\"color: #339966;\">trunk ports<\/span><\/strong> * <strong><span style=\"color: #ff0000;\">vlans<\/span><\/strong> ) + <span style=\"color: #800080;\"><strong>non-trunk interfaces<\/strong>)<\/span><\/li>\n<li><strong>Virtual interfaces<\/strong> ( Per line card ) = (( <span style=\"color: #ff0000;\"><strong><span style=\"color: #339966;\">trunk ports<\/span><\/strong> * <strong>vlans<\/strong><\/span> ))<\/li>\n<li>verify with &#8216;<em>show spantree sum total<\/em>&#8216;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/1478212663720.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-599 alignnone\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/1478212663720.png\" alt=\"\" width=\"516\" height=\"344\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/1478212663720.png 600w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/1478212663720-300x200.png 300w\" sizes=\"auto, (max-width: 516px) 100vw, 516px\" \/><\/a><\/p>\n<p><strong>Example logical interfaces:<br \/>\n<\/strong><\/p>\n<p><strong>6500 Chassis:<\/strong><\/p>\n<ul>\n<li><strong><span style=\"color: #ff0000;\">120<\/span> <\/strong>VLANS<\/li>\n<li><strong><span style=\"color: #339966;\">49<\/span><\/strong> Access layer switches<\/li>\n<li>2 connections to each switch ( double uplink but with etherchannel counts as <span style=\"color: #339966;\"><strong>1<\/strong><\/span> logical interface )<\/li>\n<li><span style=\"color: #339966;\"><strong>1<\/strong><\/span> Cross Connect to secondary Agg Switch.<\/li>\n<li><strong><span style=\"color: #800080;\">30<\/span> <\/strong>other devices connected\n<ul>\n<li>(( <strong><span style=\"color: #ff0000;\">120<\/span><\/strong> * <strong><span style=\"color: #339966;\">50<\/span><\/strong> ) + <strong><span style=\"color: #800080;\">30<\/span><\/strong> ) = <strong>6030<\/strong> Logical interface (out of <strong>10,000<\/strong> max)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/product_data_sheet0900aecd801459a7_1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-600 size-full alignnone\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/product_data_sheet0900aecd801459a7_1.jpg\" alt=\"\" width=\"355\" height=\"149\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/product_data_sheet0900aecd801459a7_1.jpg 355w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/product_data_sheet0900aecd801459a7_1-300x126.jpg 300w\" sizes=\"auto, (max-width: 355px) 100vw, 355px\" \/><\/a><\/p>\n<p><strong>Example Virtual interfaces:<\/strong><\/p>\n<p><strong>Cisco 6748 Linecard<br \/>\n<\/strong><\/p>\n<ul>\n<li><span style=\"color: #ff0000;\"><strong>120<\/strong><\/span> VLANS<\/li>\n<li>12 Access layer switches, 4 Etherchannel-bundled connections.\n<ul>\n<li>12 x 4 = <strong><span style=\"color: #339966;\">48<\/span><\/strong> ports\u00a0 ( Virtual interfaces counts every interface )\n<ul>\n<li>( <span style=\"color: #ff0000;\"><strong>120<\/strong><\/span> * <span style=\"color: #339966;\"><strong>48<\/strong><\/span> ) = <strong>5760<\/strong> Virtual Interfaces (out of <strong>1800<\/strong> max)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h1><span class=\"ez-toc-section\" id=\"High_Availability\"><\/span><span style=\"color: #3366ff;\">High Availability<\/span><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p><strong>Nic teaming options<\/strong><\/p>\n<ul>\n<li>Adapter fault tolerance (AFT):\u00a0 active \/ standby\u00a0 &#8211; Two nics\u00a0 One switch<\/li>\n<li>Switch fault tolerance (SFT):\u00a0 active \/ standby\u00a0 &#8211; Two nics Two switches<\/li>\n<li>Adaptive Load Balancing (ALB):\u00a0 active \/ active &#8211; One IP Two Macs<\/li>\n<li>Etherchannel &#8211; LAG<\/li>\n<\/ul>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/HA.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-604 size-full\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/02\/HA.png\" alt=\"\" width=\"312\" height=\"563\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/HA.png 312w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/HA-166x300.png 166w\" sizes=\"auto, (max-width: 312px) 100vw, 312px\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Expectations_and_Failover_Timers\"><\/span><strong>Expectations and Failover Timers<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<table id=\"tablepress-5\" class=\"tablepress tablepress-id-5\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Operation<\/th><th class=\"column-2\">Failover time<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">OSPF \/ EIGRP<\/td><td class=\"column-2\">Subsecond<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">RTSP<\/td><td class=\"column-2\">1-2 Seconds<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">Etherchannel<\/td><td class=\"column-2\">1 Second<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">HSRP Timers<\/td><td class=\"column-2\">3 Seconds<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Service Modules<\/td><td class=\"column-2\">1-5 Seconds<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Windows TCP Stack Tolerance<\/td><td class=\"column-2\">9 Seconds<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-5 from cache -->\n","protected":false},"excerpt":{"rendered":"<p>STP in the datacenter STP logical interfaces maximum RSTP \/ MST reach topology maximus. Switch specs logical \/ virtual interfaces.\u00a0 (6500\/ 6748) Logical interfaces == ((trunk ports * vlans ) + non-trunk interfaces) Virtual interfaces ( Per line card ) = (( trunk ports * vlans )) verify with &#8216;show spantree sum total&#8216; Example logical [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[2,4],"tags":[20,21,57,88],"class_list":["post-593","post","type-post","status-publish","format-standard","hentry","category-arc","category-datacenterdesign","tag-aft","tag-alb","tag-lag","tag-sft"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/593","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=593"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/593\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}