{"id":4366,"date":"2016-01-25T08:37:14","date_gmt":"2016-01-25T16:37:14","guid":{"rendered":"http:\/\/www5.hmc.edu\/ITNews\/?p=3076"},"modified":"2016-01-25T08:37:14","modified_gmt":"2016-01-25T16:37:14","slug":"moving-cores","status":"publish","type":"post","link":"https:\/\/www.hmc.edu\/cis\/2016\/01\/25\/moving-cores\/","title":{"rendered":"Moving Cores"},"content":{"rendered":"<p>Over the last few years, we have been improving the network <img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-3086 size-medium\" src=\"https:\/\/www.hmc.edu\/cis\/wp-content\/uploads\/sites\/18\/2016\/01\/Redundant-network-topology-300x181.png\" alt=\"Redundant-network-topology\" width=\"300\" height=\"181\" srcset=\"https:\/\/www.hmc.edu\/cis\/wp-content\/uploads\/sites\/18\/2016\/01\/Redundant-network-topology-300x181.png 300w, https:\/\/www.hmc.edu\/cis\/wp-content\/uploads\/sites\/18\/2016\/01\/Redundant-network-topology-768x463.png 768w, https:\/\/www.hmc.edu\/cis\/wp-content\/uploads\/sites\/18\/2016\/01\/Redundant-network-topology.png 775w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/>infrastructure on the HMC campus, at the CINE core (the network switches for all the Claremont Colleges) and beyond at our ISP, Los Nettos (a consortium of Southern California institutions based at USC).<\/p>\n<p>The key concepts in network infrastructure are redundancy and diversity.\u00a0 To increase network reliability, it is important to have at least two switches at the core, and that they not be in the same place.\u00a0 Similarly, it is important to have redundant and diverse connections from the campus to the CINE core and from there to the ISP. In recent years, we have built conduit, pulled fiber and installed switches with the goal of ever greater redundancy and diversity.\u00a0 In March and April we will take two more big steps in this direction.\u00a0 First we will diversify the HMC cores by placing one of them in Drinkward dorm, and with new conduit and fiber we will have diversity and redundancy for the first time for many of the buildings on campus.\u00a0 In April, we will follow up by separating the CINE core switches, placing one of them in the &#8220;phone office&#8221; on eighth street and one at the Administrative Campus Center (ACC) on first street, where a new fiber line from USC Health Sciences terminates in Claremont. At that point, the Claremont Colleges will have redundant and diverse core switches for the first time ever.<\/p>\n<p>Annually, the Claremont Colleges budget just under $700,000 for networking, and HMC budgets an additional $200-$300k. These costs, and network operations, are often invisible, especially when they are working well.\u00a0 So much so that I often run into people who think that our internet connectivity is free.<\/p>\n<p>Cindy Abercrombie, Mitch Shacklett, Roger Wiechman and Duke Vu have all worked tirelessly on these projects.\u00a0 Thank them when you see them!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Over the last few years, we have been improving the network infrastructure on the HMC campus, at the CINE core [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4366","post","type-post","status-publish","format-standard","hentry","category-from-cis"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/posts\/4366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/users\/35"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/comments?post=4366"}],"version-history":[{"count":0,"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/posts\/4366\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/media?parent=4366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/categories?post=4366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hmc.edu\/cis\/wp-json\/wp\/v2\/tags?post=4366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}