{"id":967,"date":"2018-03-01T12:04:12","date_gmt":"2018-03-01T11:04:12","guid":{"rendered":"http:\/\/www.quisted.net\/?p=967"},"modified":"2018-03-01T12:04:12","modified_gmt":"2018-03-01T11:04:12","slug":"lab-v-nexus7k-overlay-transport-virtualization","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/03\/01\/lab-v-nexus7k-overlay-transport-virtualization\/","title":{"rendered":"Lab V ( Nexus7k, Overlay Transport Virtualization )"},"content":{"rendered":"<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/03\/OTV.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-964 aligncenter\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/03\/OTV.png\" alt=\"\" width=\"468\" height=\"553\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/03\/OTV.png 468w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-254x300.png 254w\" sizes=\"auto, (max-width: 468px) 100vw, 468px\" \/><\/a><\/p>\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-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/03\/01\/lab-v-nexus7k-overlay-transport-virtualization\/#OTV_Overlay_Transport_Virtualization\" >OTV: Overlay Transport Virtualization<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/03\/01\/lab-v-nexus7k-overlay-transport-virtualization\/#References\" >References:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/03\/01\/lab-v-nexus7k-overlay-transport-virtualization\/#OTV_Encapsulation\" >OTV Encapsulation<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/03\/01\/lab-v-nexus7k-overlay-transport-virtualization\/#Configs\" >Configs:<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"OTV_Overlay_Transport_Virtualization\"><\/span><span style=\"color: #800080;\"><strong>OTV: Overlay Transport Virtualization<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><em>OTV(Overlay Transport Virtualization) is a technology that provide layer2 extension capabilities between different data centers.<br \/>\nI<\/em><em>n its most simplest form OTV is a new DCI (Data Center Interconnect) technology that routes MAC-based information by encapsulating traffic in normal IP packets for transit.<\/em><\/p>\n<ul>\n<li><em>Transparent workload mobility<\/em><\/li>\n<li><em>Business resiliency<\/em><\/li>\n<li><em>Superior computing resource efficiencies<\/em><\/li>\n<\/ul>\n\n<table id=\"tablepress-12\" class=\"tablepress tablepress-id-12\">\n<thead>\n<tr class=\"row-1\">\n\t<td class=\"column-1\"><\/td><th class=\"column-2\">Description<\/th><th class=\"column-3\">Config<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Overlay Interface<\/td><td class=\"column-2\">Logical OTV Tunnel interface<\/td><td class=\"column-3\">interface Overlay1<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">OTV Join Interface<\/td><td class=\"column-2\">The physical link or port-channel that you use to route upstream towards the datacenter interconnect<\/td><td class=\"column-3\">otv join-interface Ethernet2\/1<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">OTV Control Group<\/td><td class=\"column-2\">Multicast address used to discover the remote sites in the control plane.<\/td><td class=\"column-3\">otv control-group 224.100.100.100<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">OTV Data Group<\/td><td class=\"column-2\">Used for tunneling multicast traffic over the OTV in the dataplane<\/td><td class=\"column-3\">otv data-group 232.1.2.0\/24<br \/>\n<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Extend VLANs<\/td><td class=\"column-2\">VLANs that will be tunneled over OTV.<\/td><td class=\"column-3\">otv extend-vlan 100<br \/>\n<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Site VLAN<\/td><td class=\"column-2\">Used to synchronize the Authoritative Edge Device (AED) role within an OTV site. <\/td><td class=\"column-3\">otv site-vlan 999<br \/>\n<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">Site Identifier<\/td><td class=\"column-2\">Should be unique per Datacenter. Used in AED Election.<\/td><td class=\"column-3\">otv site-identifier 0x1<br \/>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-12 from cache -->\n<h3><span class=\"ez-toc-section\" id=\"References\"><\/span><span style=\"color: #800080;\"><strong>References:<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/switches\/datacenter\/sw\/nx-os\/OTV\/quick_start_guide\/b-Cisco-Nexus-7000-Series-OTV-QSG.html\" target=\"_blank\" rel=\"noopener\">Cisco: OTV Quick Start Guide<\/a><\/p>\n<p><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/switches\/datacenter\/nexus7000\/sw\/otv\/config\/cisco_nexus7000_otv_config_guide_8x.html\" target=\"_blank\" rel=\"noopener\">Cisco: NX-OS OTV Configuration Guide <\/a><\/p>\n<p><a href=\"https:\/\/www.cisco.com\/c\/dam\/en\/us\/products\/collateral\/switches\/nexus-7000-series-switches\/guide_c07-728315.pdf\" target=\"_blank\" rel=\"noopener\">Cisco: OTV Best Practices<\/a><\/p>\n<p><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/solutions\/Enterprise\/Data_Center\/DCI\/whitepaper\/DCI3_OTV_Intro.pdf\" target=\"_blank\" rel=\"noopener\">Cisco: OTV Whitepaper<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"OTV_Encapsulation\"><\/span><span style=\"font-size: medium; color: #800080;\">OTV Encapsulation<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><em>OTV adds a further 42 bytes on all packets traveling across the overlay network. The OTV Edge device removes the CRC and 802.1Q fields from the original Layer2 frame. It then adds an OTV Shim Header which includes this 802.1Q field (this includes the priority P-bit value) and the Overlay ID information. It also includes an external IP header for the transport network. All OTV packets have Don&#8217;t Fragment (DF) bit set to 1 in the external IP header.<\/em><\/p>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-Encapsulation.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-980\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-Encapsulation.png\" alt=\"\" width=\"999\" height=\"192\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-Encapsulation.png 999w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-Encapsulation-300x58.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/03\/OTV-Encapsulation-768x148.png 768w\" sizes=\"auto, (max-width: 999px) 100vw, 999px\" \/><\/a><\/p>\n<p><!--more--><\/p>\n<h3><span class=\"ez-toc-section\" id=\"Configs\"><\/span><span style=\"color: #993366;\">Configs:<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>\n<pre>otv site-vlan 999\notv site-identifier 0x1\n\nvlan 100\n  name OTV-EXTEND\nvlan 999\n  name OTV-SITE-VLAN\n\ninterface Overlay1\n  otv join-interface Ethernet2\/1\n  otv control-group 224.100.100.100\n  otv data-group 232.1.2.0\/24\n  otv extend-vlan 100\n  no shutdown\n\ninterface Ethernet2\/1\n  no switchport\n  mac-address 0000.0000.002f\n  ip address 1.1.1.2\/30\n  ip igmp version 3\n  no shutdown\n<\/pre>\n<pre> sh otv\n\nOTV Overlay Information\nSite Identifier 0000.0000.0001\nEncapsulation-Format ip - gre\n\nOverlay interface Overlay1\n\n VPN name            : Overlay1\n VPN state           : UP\n Extended vlans      : 100 (Total:1)\n Control group       : 224.100.100.100\n Data group range(s) : 232.1.2.0\/24\n Broadcast group     : 224.100.100.100\n Join interface(s)   : Eth2\/1 (1.1.1.2)\n Site vlan           : 999 (up)\n AED-Capable         : Yes\n Capability          : Multicast-Reachable\n\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>OTV: Overlay Transport Virtualization OTV(Overlay Transport Virtualization) is a technology that provide layer2 extension capabilities between different data centers. In its most simplest form OTV is a new DCI (Data Center Interconnect) technology that routes MAC-based information by encapsulating traffic in normal IP packets for transit. Transparent workload mobility Business resiliency Superior computing resource efficiencies [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[4,6],"tags":[71,74],"class_list":["post-967","post","type-post","status-publish","format-standard","hentry","category-datacenterdesign","category-labs","tag-nexus","tag-otv"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/967","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=967"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/967\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}