{"id":3314,"date":"2019-02-27T13:04:23","date_gmt":"2019-02-27T18:04:23","guid":{"rendered":"https:\/\/chrisgrundemann.com\/?post_type=avada_portfolio&#038;p=3314"},"modified":"2021-01-27T13:04:47","modified_gmt":"2021-01-27T18:04:47","slug":"nanog-75-re-defining-core-and-access-a-new-two-tier-network-model","status":"publish","type":"avada_portfolio","link":"https:\/\/chrisgrundemann.com\/index.php\/portfolio\/nanog-75-re-defining-core-and-access-a-new-two-tier-network-model\/","title":{"rendered":"NANOG 75 &#8211; Re Defining Core and Access: A New, Two Tier Network Model"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1372.8px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.6666666667%;--awb-margin-top-large:20px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.88%;--awb-width-medium:66.6666666667%;--awb-order-medium:0;--awb-spacing-right-medium:2.88%;--awb-spacing-left-medium:2.88%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-widget fusion-widget-element fusion-widget-area fusion-content-widget-area wpWidget-1 wp_widget_media_video\" style=\"--awb-fusion-border-size:0px;--awb-fusion-border-style:solid;\"><div class=\"widget widget_media_video\"><div style=\"width:100%;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-3314-1\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/youtube\" src=\"https:\/\/youtu.be\/guveKsfLJvo?_=1\" \/><a href=\"https:\/\/youtu.be\/guveKsfLJvo\">https:\/\/youtu.be\/guveKsfLJvo<\/a><\/video><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.3333333333%;--awb-margin-top-large:20px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:5.76%;--awb-width-medium:33.3333333333%;--awb-order-medium:0;--awb-spacing-right-medium:5.76%;--awb-spacing-left-medium:5.76%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>In the past, when we designed, built, and operated networks as a collection of devices (routers, switches, and firewalls) we defined our network architecture in terms of physical layers. The three-tiered Core, Aggregation\/Distribution, and Access model is familiar to every network engineer. Server virtualization and new application frameworks have forced us to reconsider this model. Instead of a multi-tier hierarchical design, we have found folded-Clos (spine-leaf) networks much more efficient at moving large quantities of packets from anywhere to anywhere. In order to keep up with the speed of virtualized compute and storage, we\u2019ve adopted virtualized networks that run as an overlay (with the physical Clos network becoming an underlay)&#8230;<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":4261,"featured_media":3316,"menu_order":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"portfolio_category":[972],"portfolio_skills":[998],"portfolio_tags":[1027,1026,977],"class_list":["post-3314","avada_portfolio","type-avada_portfolio","status-publish","format-standard","has-post-thumbnail","hentry","portfolio_category-public-speaking","portfolio_skills-presentation","portfolio_tags-nanog","portfolio_tags-network","portfolio_tags-video"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NANOG 75 - Re Defining Core and Access: A 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