[110000] in North American Network Operators' Group
Re: What is the most standard subnet length on internet
daemon@ATHENA.MIT.EDU (Joe Greco)
Fri Dec 19 10:50:14 2008
From: Joe Greco <jgreco@ns.sol.net>
To: patrick@ianai.net (Patrick W. Gilmore)
Date: Fri, 19 Dec 2008 09:48:50 -0600 (CST)
In-Reply-To: <BEFAF8CA-7ED7-47F2-A02F-5D5DEBC0FD88@ianai.net> from "Patrick W.
Gilmore" at Dec 19, 2008 07:07:08 AM
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> As for routing table size, no router which can handle 10s of Gbps is
> at all bothered by the size of the global table,
... as long as it isn't something like a Cisco Catalyst 6509 with SUP720
and doesn't have a PFC3BXL helping out ...
... or if we conveniently don't classify a Catalyst 65xx as a router
because it was primarily intended as a switch, despite how ISP's commonly
use them ...
> so only edge devices
> or stub networks are in danger of needing to filter /24s. And both of
> those can (should?) have something called a "default route", making it
> completely irrelevant whether they hear the /24s anyway.
A more accurate statement is probably that "any router that can handle
10s of Gbps is likely to be available in a configuration that is not at
all bothered by the current size of the global table, most likely at some
substantial additional cost."
... JG
--
Joe Greco - sol.net Network Services - Milwaukee, WI - http://www.sol.net
"We call it the 'one bite at the apple' rule. Give me one chance [and] then I
won't contact you again." - Direct Marketing Ass'n position on e-mail spam(CNN)
With 24 million small businesses in the US alone, that's way too many apples.
