<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: arial,helvetica,sans-serif; font-size: 10pt; color: #000000'>I haven't seen anyone selling 25G or 50G transport.<br><br><div><span name="x"></span><br><br>-----<br>Mike Hammett<br>Intelligent Computing Solutions<br>http://www.ics-il.com<br><br>Midwest-IX<br>http://www.midwest-ix.com<span name="x"></span><br></div><br><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Saku Ytti" <saku@ytti.fi><br><b>To: </b>"Mike Hammett" <nanog@ics-il.net><br><b>Cc: </b>nanog@nanog.org<br><b>Sent: </b>Sunday, November 25, 2018 9:45:58 AM<br><b>Subject: </b>Re: Cheap switch with a couple 100G<br><br>The argument should be 50G is cheaper than 40G.<br><br>Because serdes is 25G typically, you get 25, 50, 100 without gearboxes<br>and retimers, so less pincount, less thermal, higher density, lower<br>cost.<br><br>But BOM impact to pricing isn't high anyhow, unless we're talking<br>about massive port counts.<br><br>If box DOES support 10GE and 40GE then the cost benefit is not there,<br>so you need to be targeting quite specific use case, use-case large<br>scale DCs are targeting.<br><br>On Sun, 25 Nov 2018 at 16:42, Mike Hammett <nanog@ics-il.net> wrote:<br>><br>> I keep hearing how cheap 100G is compared to 40G and it doesn't seem to hold true. Prove me wrong.<br>><br>> Cisco Nexus and Arista both have switches with 48x 10G ports and 2x - 6x 40G ports for under $1k. Swap those 40G for 100G and you're at $5k - $7k.<br>><br>> Am I missing some cheap switches with 100G?<br>><br>><br>> I ask this because the transport companies seem to have given up on 40G.<br>><br>><br>> -----<br>> Mike Hammett<br>> Intelligent Computing Solutions<br>> http://www.ics-il.com<br>><br>> Midwest-IX<br>> http://www.midwest-ix.com<br><br><br><br>-- <br> ++ytti<br></div><br></div></body></html>