{"id":517,"date":"2018-01-12T12:30:28","date_gmt":"2018-01-12T11:30:28","guid":{"rendered":"http:\/\/www.quisted.net\/?p=517"},"modified":"2018-01-12T12:30:28","modified_gmt":"2018-01-12T11:30:28","slug":"hierarchical-design","status":"publish","type":"post","link":"https:\/\/www.quisted.net\/index.php\/2018\/01\/12\/hierarchical-design\/","title":{"rendered":"Hierarchical Design &#8211; (Campus Core , Distribution, Access)"},"content":{"rendered":"<p><a href=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/hirarchical.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-518 size-full\" src=\"http:\/\/vps.quisted.net\/wp-content\/uploads\/2018\/01\/hirarchical.png\" alt=\"\" width=\"442\" height=\"349\" srcset=\"https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/hirarchical.png 442w, https:\/\/www.quisted.net\/wp-content\/uploads\/2018\/01\/hirarchical-300x237.png 300w\" sizes=\"auto, (max-width: 442px) 100vw, 442px\" \/><\/a><\/p>\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\/01\/12\/hierarchical-design\/#ACCESS\" >ACCESS<\/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\/12\/hierarchical-design\/#DISTRIBUTION\" >DISTRIBUTION<\/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\/01\/12\/hierarchical-design\/#CORE\" >CORE<\/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\/01\/12\/hierarchical-design\/#MODULARITY\" >MODULARITY<\/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\/01\/12\/hierarchical-design\/#FLEXIBILITY\" >FLEXIBILITY<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"ACCESS\"><\/span>ACCESS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong><span style=\"color: #3366ff;\">Redundant supervisors, power supplies, uplink connections, FHRP, Stackwise.<\/span><\/strong><\/li>\n<li>Dedicated to meeting the functions of end-device connectivity.<\/li>\n<li>First layer of defense in the network security architecture.<\/li>\n<li>First point of Negotiation between end devices and network infrastructure.<\/li>\n<li>Feature rich because of the various devices connected to it.\n<ul>\n<li>Security, QOS, policy trust boundry functions.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"DISTRIBUTION\"><\/span><strong>DISTRIBUTION<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"color: #3366ff;\"><strong>Redundant paths, layer3 load sharing, dynamic routing, FHRP.<\/strong><\/span><\/li>\n<li>Aggregation point for all access nodes.<\/li>\n<li>Connectivity and policies for traffic-flows within a single access-distribution block (<strong>east-west<\/strong> traffic flows).<\/li>\n<li>Aggregation, policy control, isolation demarcation points between campus distribution blocks. ( <strong>north-south<\/strong> traffic flows).<\/li>\n<li>Configuration choices often depend on the requirements of the <strong>access layer<\/strong>.<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"CORE\"><\/span><strong>CORE<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><span style=\"color: #3366ff;\"><strong>Highest speed and failover.<\/strong><\/span><\/li>\n<li>Dedicated to providing nonstop connectivity across the entire network.<\/li>\n<li>Always on mode ( 7x24x365).<\/li>\n<li>Provides the appropriate level of redundancy.<\/li>\n<li>he core layer serves as the aggregator for all the other campus.<br \/>\nblocks and ties together the campus with the rest of the network.<\/li>\n<li>A sperate core layer isnt needed for a small network &lt;300 users (Collapsed core design).<\/li>\n<\/ul>\n<hr \/>\n<h3><span class=\"ez-toc-section\" id=\"MODULARITY\"><\/span>MODULARITY<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>The advantage of the modular blocks due to the isolation it can provide.\n<ul>\n<li>Failures that occur within a module can be isolated from the rest of the network.<\/li>\n<\/ul>\n<\/li>\n<li>Modular blocks offers repeatable design standards.\n<ul>\n<li>When one module is missing capacity it can be updated or replaced by a new block with the same structured role.<\/li>\n<\/ul>\n<\/li>\n<li>A campus network can have multiple different modules ( Building blocks \/ places in the network PINs).<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"FLEXIBILITY\"><\/span>FLEXIBILITY<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Control plane flexibility<\/li>\n<li>Forwarding plane flexibility<\/li>\n<li>User group flexibility<\/li>\n<li>Traffic management and control flexibility<\/li>\n<li>flexibility to support multitenancy and traffic isolation requirements<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"","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":[2,5],"tags":[],"class_list":["post-517","post","type-post","status-publish","format-standard","hentry","category-arc","category-designprinciples"],"_links":{"self":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/517","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=517"}],"version-history":[{"count":0,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/posts\/517\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/media?parent=517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/categories?post=517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quisted.net\/index.php\/wp-json\/wp\/v2\/tags?post=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}