Re: Internet Edge Router replacement - IPv6 route table size considerations

["tsison () gmail com" <tsison () gmail com>]

have you looked into juniper networks?

----- Reply message -----
From: "Chris Enger" <chrise () ci hillsboro or us>
Date: Tue, Mar 8, 2011 5:15 pm
Subject: Internet Edge Router replacement - IPv6 route table size considerations
To: "'nanog () nanog org'" <nanog () nanog org>

Greetings,

    I am researching possible replacements for our Internet edge routers, and wanted to see what people could recommend 
for a smaller chassis or fixed router that can handle current IPv4 routes and transition into IPv6.  Currently 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 range from 256k - 500k IPv4 and 4k - 16k IPv6 routes when CAM space is allocated 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 that 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