[138488] in North American Network Operators' Group
Internet Edge Router replacement - IPv6 route table size
daemon@ATHENA.MIT.EDU (Chris Enger)
Tue Mar 8 19:13:30 2011
From: Chris Enger <chrise@ci.hillsboro.or.us>
To: "'nanog@nanog.org'" <nanog@nanog.org>
Date: Tue, 8 Mar 2011 16:15:03 -0800
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Greetings,
I am researching possible replacements for our Internet edge routers, a=
nd wanted to see what people could recommend for a smaller chassis or fixed=
router that can handle current IPv4 routes and transition into IPv6. Curr=
ently we have Brocade NetIron 4802s pulling full IPv4 routes plus a default=
route. I've looked at Extreme, Brocade, Cisco, and a few others. Most ra=
nge from 256k - 500k IPv4 and 4k - 16k IPv6 routes when CAM space is alloca=
ted for both. The only exception I've found so far is the Cisco ASR 1002, =
which can do 125k v6 along with 500k v4 routes at once. I'm curious if any=
other vendors have comparable products.
My concern is trying to find a router (within our budget) that has room for=
growth in the IPv6 routing space. When compared to the live table sizes t=
hat the CIDR report and routeviews show, some can't handle current routing =
tables, let alone years of growth. BGP tweaks may keep us going but I can'=
t see how 16k or fewer IPv6 routes on a router is going to be viable a few =
years from now.
Thank you,
Chris Enger
