{"id":1271,"date":"2018-08-08T12:14:49","date_gmt":"2018-08-08T12:14:49","guid":{"rendered":"https:\/\/www.quisted.net\/?p=1271"},"modified":"2018-08-09T10:38:22","modified_gmt":"2018-08-09T08:38:22","slug":"dc-datacenter-interconnects","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/08\/08\/dc-datacenter-interconnects\/","title":{"rendered":"[DC] Datacenter Interconnects (DCI, OTV)"},"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-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/08\/08\/dc-datacenter-interconnects\/#Distributed_Data_center_Goals\" >Distributed Data center Goals<\/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\/08\/08\/dc-datacenter-interconnects\/#Challenges_in_traditional_Layer_2_VPN\" >Challenges in traditional Layer 2 VPN:<\/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\/08\/08\/dc-datacenter-interconnects\/#DCI_vs_Network_Interconnectivity\" >DCI vs Network Interconnectivity<\/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\/08\/08\/dc-datacenter-interconnects\/#OTV_Overlay_Transport_Virtualization\" >OTV\u00a0 ( Overlay Transport Virtualization )<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/08\/08\/dc-datacenter-interconnects\/#NVGRE\" >NVGRE<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Distributed_Data_center_Goals\"><\/span><span style=\"color: #993366;\">Distributed Data center Goals<img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-1272 \" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/datacenter-300x259.png\" alt=\"\" width=\"171\" height=\"148\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/datacenter-300x259.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/datacenter.png 465w\" sizes=\"auto, (max-width: 171px) 100vw, 171px\" \/><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Ensure business continuity<\/li>\n<li>Distributed applications<\/li>\n<li>Seamless workload mobility<\/li>\n<li>Maximize compute resources<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Challenges_in_traditional_Layer_2_VPN\"><\/span><span style=\"color: #993366;\">Challenges in traditional Layer 2 VPN:<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong><span style=\"color: #3366ff;\">Flooding Behavior<\/span><\/strong>\n<ul>\n<li>Unknown unicast for mac propagation<\/li>\n<li>Unicast Flooding reaches all sites<\/li>\n<\/ul>\n<\/li>\n<li><strong><span style=\"color: #3366ff;\">Pseudo-wire Maintenance<\/span><\/strong>\n<ul>\n<li>Full mesh of Pseudo-wire is complex<\/li>\n<li>Head-End replication is a common problem<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Multi-Homing<\/strong><\/span>\n<ul>\n<li>Requires additional protocols and extends STP<\/li>\n<li>Malfunctions impact multipe sites<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p><a href=\"https:\/\/www.quisted.net\/index.php\/2018\/02\/15\/data-center-design-vii-datacenter-interconnects\/\">https:\/\/www.quisted.net\/index.php\/2018\/02\/15\/data-center-design-vii-datacenter-interconnects\/<\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"DCI_vs_Network_Interconnectivity\"><\/span><span style=\"color: #993366;\">DCI vs Network Interconnectivity<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>Network Interconnectivity<\/strong><\/p>\n<ul>\n<li>Using traditional LAN technologies to connect multiple datacenters<\/li>\n<li>Typically use Layer3\n<ul>\n<li>Some applications require L2 Extensions\n<ul>\n<li>Clustering<\/li>\n<li>Workload mobility<\/li>\n<li>Replication<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Datecenter Interconnect<\/strong><\/p>\n<ul>\n<li>Loop-free LAN extention stretching across the datacenter WAN.<\/li>\n<li>Issuess to be concerned with:\n<ul>\n<li>Limited by physical standards for media<\/li>\n<li>STP convergence<\/li>\n<li>Broadcast storms<\/li>\n<li>Failure isolation (sites should be independent)<\/li>\n<li>Number of sites<\/li>\n<li>Scalability (Max numbers of VLANs and MAC addresses)<\/li>\n<li>Confidentiality ( Encryption )<\/li>\n<li>Operational complexity<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"OTV_Overlay_Transport_Virtualization\"><\/span><span style=\"color: #993366;\">OTV\u00a0 ( Overlay Transport Virtualization )<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"color: #3366ff;\"><strong>Ethernet LAN Extension over any Network<\/strong><\/span>\n<ul>\n<li>Works over darkfiber, MPLS, or IP Network<\/li>\n<li>Multi-datacenter scalability<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Simplified Configuration and Operation<\/strong><\/span>\n<ul>\n<li>Seamless overlay &#8211; no network redesign<\/li>\n<li>Single touch site configuration<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>High Resilency<\/strong><\/span>\n<ul>\n<li>Failure domain isolation<\/li>\n<li>Seamless Multi-homing<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Maximizes available bandwith<\/strong><\/span>\n<ul>\n<li>Automated Multipathing<\/li>\n<li>Optimal multicast replication<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul>\n<li><span style=\"color: #3366ff;\"><strong>Unknown Unicast Supression<\/strong><\/span>\n<ul>\n<li>No flooding storm over DCI<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Spanning tree Seperation<\/strong><\/span>\n<ul>\n<li>Reduce failure domains<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Controlling ARP<\/strong><\/span>\n<ul>\n<li>ARP cache<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #3366ff;\"><strong>Multihoming<\/strong><\/span>\n<ul>\n<li>Per-VLAN loadbalancing<\/li>\n<\/ul>\n<\/li>\n<li><strong><span style=\"color: #3366ff;\">Path optimization<\/span><\/strong>\n<ul>\n<li>FHRP Localization<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1282 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/OTV.png\" alt=\"\" width=\"922\" height=\"586\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/OTV.png 922w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/OTV-300x191.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/08\/OTV-768x488.png 768w\" sizes=\"auto, (max-width: 922px) 100vw, 922px\" \/><\/p>\n<h3><span class=\"ez-toc-section\" id=\"NVGRE\"><\/span><span style=\"color: #993366;\">NVGRE<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Distributed Data center Goals Ensure business continuity Distributed applications Seamless workload mobility Maximize compute resources Challenges in traditional Layer 2 VPN: Flooding Behavior Unknown unicast for mac propagation Unicast Flooding reaches all sites Pseudo-wire Maintenance Full mesh of Pseudo-wire is complex Head-End replication is a common problem Multi-Homing Requires additional protocols and extends STP Malfunctions [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[3],"tags":[34,74],"class_list":["post-1271","post","type-post","status-publish","format-standard","hentry","category-dc","tag-dci","tag-otv"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/1271","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=1271"}],"version-history":[{"count":10,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/1271\/revisions"}],"predecessor-version":[{"id":1285,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/1271\/revisions\/1285"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=1271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=1271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=1271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}