{"id":556,"date":"2018-01-29T21:56:04","date_gmt":"2018-01-29T20:56:04","guid":{"rendered":"http:\/\/www.quisted.net\/?p=556"},"modified":"2018-01-29T21:56:04","modified_gmt":"2018-01-29T20:56:04","slug":"datacenter-design","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/01\/29\/datacenter-design\/","title":{"rendered":"Datacenter Design I (Core, Aggregation, Access Designs)"},"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 ' ><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-1\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/01\/29\/datacenter-design\/#Core\" >Core<\/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\/01\/29\/datacenter-design\/#Aggregration\" >Aggregration<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.quisted.net\/index.php\/2018\/01\/29\/datacenter-design\/#Access-layer\" >Access-layer<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Core\"><\/span><span style=\"color: #993366;\">Core<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Not all datacenter designs needs a core layer<\/li>\n<li>Access to aggregation, aggregation to core : 10 or 40GBps<\/li>\n<li>CEF load balancing tuning (L3 + L4)<\/li>\n<li>Core should run L3 only, Aggregation acts as L3\/L2 boundry to access<\/li>\n<li>Core runs OSPF \/ EIGRP with aggregation<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"Aggregration\"><\/span><span style=\"color: #993366;\">Aggregration<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/datacenter-campus.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-559 \" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/datacenter-campus-300x216.png\" alt=\"\" width=\"394\" height=\"284\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/datacenter-campus-300x216.png 300w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/datacenter-campus.png 572w\" sizes=\"auto, (max-width: 394px) 100vw, 394px\" \/><\/a><\/p>\n<p><!--more--><\/p>\n<p><strong>OSPF<\/strong><\/p>\n<ul>\n<li>Datacenter Core as NSSA.\n<ul>\n<li>Campus core wille be your backbone area (area 0).<\/li>\n<\/ul>\n<\/li>\n<li>Summerize Routes to Campus.<\/li>\n<li>Default Route from campus.<\/li>\n<li>Authentication \/ tuning.<\/li>\n<\/ul>\n<p><strong>Eigrp<\/strong><\/p>\n<ul>\n<li>Summery-addressto advertize campus default.<\/li>\n<li>Summery-address to sum up datacenter.<\/li>\n<li>Authentication \/ tuning.<\/li>\n<\/ul>\n<p><strong>Service modules<\/strong><\/p>\n<ul>\n<li>Using Cisco Modular switches for service modules:\n<ul>\n<li>Content switching (<strong>CSM<\/strong>) \/ Application Control Engine ( <strong>ACE<\/strong> )<\/li>\n<li>Firewall Service Module ( <strong>FWSM<\/strong> )<\/li>\n<li>Intrustion Prevention ( <strong>IPS<\/strong> )<\/li>\n<li>Wireless ( <strong>WISM<\/strong> )<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h1><span class=\"ez-toc-section\" id=\"Access-layer\"><\/span><span style=\"color: #3366ff;\">Access-layer<\/span><span class=\"ez-toc-section-end\"><\/span><\/h1>\n<p>Looped designs, redundant linked blocked by <strong>STP.<br \/>\n<\/strong>All links in the <strong>layer2<\/strong> domain.<strong><br \/>\n<\/strong><\/p>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-triangle.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-566 alignnone\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-triangle-193x300.png\" alt=\"\" width=\"259\" height=\"402\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-triangle-193x300.png 193w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-triangle.png 328w\" sizes=\"auto, (max-width: 259px) 100vw, 259px\" \/><\/a><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-square.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-565 \" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-square-193x300.png\" alt=\"\" width=\"253\" height=\"394\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-square-193x300.png 193w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-looped-square.png 328w\" sizes=\"auto, (max-width: 253px) 100vw, 253px\" \/><\/a><\/p>\n<p>Designs without STP implementation ( Faster convergence):<\/p>\n<p><strong><br \/>\n<\/strong><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-loop-free-uaccess-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-572 alignnone\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-loop-free-uaccess-1-260x300.png\" alt=\"\" width=\"287\" height=\"331\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-loop-free-uaccess-1-260x300.png 260w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-loop-free-uaccess-1.png 441w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/a><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-inverted-uaccess.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-570 alignright\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-inverted-uaccess-260x300.png\" alt=\"\" width=\"280\" height=\"323\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-inverted-uaccess-260x300.png 260w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer2-inverted-uaccess.png 441w\" sizes=\"auto, (max-width: 280px) 100vw, 280px\" \/><\/a><\/p>\n<p><strong>Flexlink design<\/strong> ( Disables STP with Active\/Passive links).<\/p>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/Flexlink.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-575\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/Flexlink-260x300.png\" alt=\"\" width=\"297\" height=\"343\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/Flexlink-260x300.png 260w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/Flexlink.png 441w\" sizes=\"auto, (max-width: 297px) 100vw, 297px\" \/><\/a><\/p>\n<p><strong>Layer 3 access layer design:<\/strong><\/p>\n<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer3-access.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-577\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/layer3-access-260x300.png\" alt=\"\" width=\"303\" height=\"349\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer3-access-260x300.png 260w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/layer3-access.png 441w\" sizes=\"auto, (max-width: 303px) 100vw, 303px\" \/><\/a><\/p>\n<ul>\n<li style=\"text-align: left;\"><span style=\"color: #339966;\">Each pair of switches are a L2 domain.<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #339966;\">Access layer uplinks are load balanced.<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #339966;\">STP still runs on the access layer.<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #ff0000;\">IP address space takes more management.<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #ff0000;\">Difficult migration.<\/span><\/li>\n<li style=\"text-align: left;\"><span style=\"color: #ff0000;\">Service Modules needed within access layer switches.<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Core Not all datacenter designs needs a core layer Access to aggregation, aggregation to core : 10 or 40GBps CEF load balancing tuning (L3 + L4) Core should run L3 only, Aggregation acts as L3\/L2 boundry to access Core runs OSPF \/ EIGRP with aggregation Aggregration<\/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":[18,29,47,53,107],"class_list":["post-556","post","type-post","status-publish","format-standard","hentry","category-arc","category-datacenterdesign","tag-ace","tag-csm","tag-fwsm","tag-ips","tag-wism"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/556","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=556"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/556\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}