{"id":782,"date":"2009-10-07T19:41:46","date_gmt":"2009-10-08T01:41:46","guid":{"rendered":"http:\/\/gregsowell.com\/?p=782"},"modified":"2009-10-07T19:41:46","modified_gmt":"2009-10-08T01:41:46","slug":"cheap-high-density-layer-2-aggregation","status":"publish","type":"post","link":"https:\/\/gregsowell.com\/?p=782","title":{"rendered":"Cheap High Density Layer 2 Aggregation"},"content":{"rendered":"<p>Lets say we have a company that has several locations. They are about to all move into a new building, the majority of these users will be in a cube farm. All of the users will be within 280\u2032 of your IDF. Each user is getting two ports, and you want them both to be hot for phone or for data. They will also be using Cisco IP phones, so we want PoE. This all works out to be about 298 ports. How would you go about aggregating all of these users?<\/p>\n<p>Most people, I believe, will think, \u201cJust put in a bunch of switches.\u201d Indeed, this method works. There are some down sides to this. For one, you would require seven 48 port PoE switches. Each switch will run you $1850 for a 48 port 3560 PoE(WS-C3560-48PS-S) with a total of $12950. To save money you can get fourteen 24 port PoE 3550s (WS-C3550-24PWR-SMI) which cost $380 each for a total of $5320. On top of this you are looking at a beefy set of UPSs to power all of this gear. We want to have PoE power on our phones for at least 20 minutes in case of failure. The 3560s could be powered by a single triplite(SU6000RT4U<br \/>\n) which will run you around $3000, though the 3550s will most likely run you 2 UPSs. Beyond all of this, you have 7 or 14 switches that you have to interconnect, maintain and secure. The administrative burden gets somewhat high and should also be factored into the cost. Now, I\u2019ll tell you what I would do in this situation.<\/p>\n<p>I would choose to go with a larger chassis based system. A Cisco 6509 fits the bill quite well. My build is below:<\/p>\n<ul>\n<li>WS-C6509 \u2013 chassis \u2013 $350<\/li>\n<li>WS-C6K-9SLOT-FAN2 \u2013 fan tray \u2013 $299<\/li>\n<li>2 WS-CAC-2500W \u2013 power supplies \u2013 $410 each<\/li>\n<li>2 CAB-7513AC \u2013 power cables \u2013 $20 each<\/li>\n<li>7 WS-X6348-RJ45V \u2013 48 port PoE line cards \u2013 $75 each<\/li>\n<li>WS-C6X09-RACK &#038; CK-CRSHELF \u2013 rack mount kit \u2013 $80<\/li>\n<\/ul>\n<p>As for supervisor choice, you have a couple of options. I wanted to be able to do extensive layer 2 security, so I went with a sup32. If you aren\u2019t concerned about securing layer 2, which you should be, you could simply use a sup2 which is MUCH cheaper.<\/p>\n<ul>\n<li>WS-SUP32-GE-3B \u2013 sup32, my choice \u2013 $2500<\/li>\n<li>OR<\/li>\n<li>WS-X6K-S2U-MSFC2 \u2013 sup2, which I wouldn\u2019t recommend because of it\u2019s limited security \u2013 $530<\/li>\n<\/ul>\n<p>So, for my system you are looking at a total of about $4650. You would also want the SU6000RT4U UPS which can maintain our chassis for the allotted 20 minutes. You\u2019ve consolidated down to a single device, you\u2019ve saved money and you now have a higher level of redundancy. If you wanted, you could slap a second supervisor in the chassis and you would bring the redundancy up even higher!<\/p>\n<p>If you would like to know where I got my pricing, I used <a title=\"blocked::http:\/\/www.teksavers.com\/ teksavers\" href=\"http:\/\/www.teksavers.com\/\" target=\"_blank\">Teksavers<\/a> and <a title=\"blocked::http:\/\/www.cablesandkits.com\/ cables-n-kits\" href=\"http:\/\/www.cablesandkits.com\/\" target=\"_blank\">CablesAndKits<\/a> which are both reputable distributors.<\/p>\n<p>I have a following article that will show you how I plan to secure these devices, so keep checking back.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lets say we have a company that has several locations. They are about to all move into a new building, the majority of these\u2026<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,20,8],"tags":[],"class_list":["post-782","post","type-post","status-publish","format-standard","hentry","category-cisco","category-hardware","category-networking"],"_links":{"self":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=782"}],"version-history":[{"count":1,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":783,"href":"https:\/\/gregsowell.com\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions\/783"}],"wp:attachment":[{"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gregsowell.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}