{"id":809,"date":"2018-02-15T11:27:35","date_gmt":"2018-02-15T10:27:35","guid":{"rendered":"http:\/\/www.quisted.net\/?p=809"},"modified":"2018-08-08T12:47:47","modified_gmt":"2018-08-08T12:47:47","slug":"data-center-design-vii-datacenter-interconnects","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/02\/15\/data-center-design-vii-datacenter-interconnects\/","title":{"rendered":"Datacenter Design VII ( Datacenter Interconnects )"},"content":{"rendered":"<p><a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/DCI.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-812 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/DCI.png\" alt=\"\" width=\"387\" height=\"237\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/DCI.png 387w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/DCI-300x184.png 300w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/www.cisco.com\/c\/dam\/en\/us\/solutions\/collateral\/data-center-virtualization\/data-center-interconnect\/at_a_glance_c45-493703.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/www.cisco.com\/c\/dam\/en\/us\/solutions\/collateral\/data-center-virtualization\/data-center-interconnect\/at_a_glance_c45-493703.pdf<\/a><\/p>\n<ul>\n<li><strong>Types of Data Center Interconnections<\/strong>\n<ul>\n<li><span style=\"color: #993366;\"><strong>Layer 1 DCI<\/strong><\/span>\n<ul>\n<li>Physical connection between Data Centers\n<ul>\n<li>Dark Fiber ( MetroE)<\/li>\n<li>Fibrechannel<\/li>\n<\/ul>\n<\/li>\n<li>Not as flexible<\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #993366;\"><strong>Layer 2 DCI<\/strong><\/span>\n<ul>\n<li>Carrier appears as L2 Bridge<\/li>\n<li><em>MPLS options<\/em><\/li>\n<li><em>VPLS options<\/em><\/li>\n<li><em>IP Mobility<\/em><\/li>\n<\/ul>\n<\/li>\n<li><span style=\"color: #993366;\"><strong>Layer 3 DCI<\/strong><\/span>\n<ul>\n<li>IP Based connection\n<ul>\n<li>iSCSI<\/li>\n<li>Routing<\/li>\n<li><span class=\"st\">ATOMoGRE<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><!--more--><\/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\/02\/15\/data-center-design-vii-datacenter-interconnects\/#Layer_2_datacenter_Interconnects\" >Layer 2 datacenter Interconnects<\/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\/02\/15\/data-center-design-vii-datacenter-interconnects\/#Layer_3_datacenter_Interconnects\" >Layer 3 datacenter Interconnects<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Layer_2_datacenter_Interconnects\"><\/span><span style=\"color: #3366ff;\"><strong>Layer 2 datacenter Interconnects<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>Layer 2 DCI provides the best advantages<\/strong>\n<ul>\n<li>Seamless migration between datacenters\u00a0 ( <strong>AWS<\/strong> )<\/li>\n<li>VM Mobility, IP Address Mobility.<\/li>\n<li>Single physical circuit between multiple sites.<\/li>\n<li>Count the cost of failure.\n<ul>\n<li><em>&#8220;What if X goes down?&#8221;<\/em><\/li>\n<li><em>&#8220;What if a link goes down between datacenters?<\/em><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li><strong>Layer 2 DCI Design options:<\/strong>\n<ul>\n<li><em>MPLS psuedowire<\/em><\/li>\n<li><a href=\"https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/wireless\/mwr_2941_dc\/software_config\/guide\/3_3\/2941_33_Config_Guide\/Pseudowire.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/www.cisco.com\/c\/en\/us\/td\/docs\/wireless\/mwr_2941_dc\/software_config\/guide\/3_3\/2941_33_Config_Guide\/Pseudowire.pdf<\/a><\/li>\n<li>Ethernet Over MPLS ( <strong>EOMPLS<\/strong> &#8211; ELAN )<\/li>\n<li>Virtual Private Lan Private Service ( VPLS )<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Layer_3_datacenter_Interconnects\"><\/span><span style=\"color: #3366ff;\"><strong>Layer 3 datacenter Interconnects<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The challenge is how to make Layer3 DCI act like Layer2 DCI.<\/p>\n<ul>\n<li>Basic IP Routing, Always an option, combined with <strong>overlay networks for layer2.<\/strong><\/li>\n<li>Any transport over MPLS over GRE ( <strong>ATOMoGRE<\/strong> ).<a href=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/atomogre.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-817 size-full\" src=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/02\/atomogre.png\" alt=\"\" width=\"121\" height=\"135\" \/><\/a><\/li>\n<li><strong>Overlay Transport Virtualization ( OTV ).<\/strong>\n<ul>\n<li>Developed by Cisco.<\/li>\n<li>No <span style=\"color: #993366;\"><strong>pseudowires, MPLS, STP<\/strong><\/span><\/li>\n<li>No <span style=\"color: #993366;\"><strong>Mac Flooding<\/strong>,<strong> OTV Edge<\/strong><\/span> devices use<span style=\"color: #993366;\"><strong> IS-IS<\/strong> <\/span>to advertise MACs.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Virtual Extensible LAN ( VxLAN ).<\/strong>\n<ul>\n<li>Original overlay<\/li>\n<li>Mac Flooding, Learning, <span style=\"color: #993366;\"><strong>Requires 1600 Byte Packet Size<\/strong><\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.cisco.com\/c\/dam\/en\/us\/solutions\/collateral\/data-center-virtualization\/data-center-interconnect\/at_a_glance_c45-493703.pdf Types of Data Center Interconnections Layer 1 DCI Physical connection between Data Centers Dark Fiber ( MetroE) Fibrechannel Not as flexible Layer 2 DCI Carrier appears as L2 Bridge MPLS options VPLS options IP Mobility Layer 3 DCI IP Based connection iSCSI Routing ATOMoGRE<\/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":[2,4],"tags":[24,34,40,41,74,98],"class_list":["post-809","post","type-post","status-publish","format-standard","hentry","category-arc","category-datacenterdesign","tag-atomogre","tag-dci","tag-elan","tag-eompls","tag-otv","tag-vpls"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/809","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=809"}],"version-history":[{"count":2,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/809\/revisions"}],"predecessor-version":[{"id":1278,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/809\/revisions\/1278"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}