[116083] in North American Network Operators' Group
Re: What is good in modular routers these days?
daemon@ATHENA.MIT.EDU (Edward B. DREGER)
Sun Jul 19 23:03:10 2009
Date: Mon, 20 Jul 2009 03:02:51 +0000 (GMT)
From: "Edward B. DREGER" <eddy+public+spam@noc.everquick.net>
To: nanog@nanog.org
In-Reply-To: <alpine.DEB.1.10.0907200442400.4558@uplift.swm.pp.se>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
MA> Date: Mon, 20 Jul 2009 04:45:17 +0200 (CEST)
MA> From: Mikael Abrahamsson
MA> There are no CPU based routers with proper 10GE forwarding
MA> capabilities that I am aware of, closest would be network processor
MA> based (which some might argue is a lot of CPUs in some cases, but
MA> it's not a 2600 type CPU anyway).
MA>
MA> Single-thread CPU just isn't fast enough to handle the PPS involved
MA> (currently).
With a little creativity, it can _almost_ be done for IPv4.
With an efficient FIB algorithm, a single core on a Xeon 5400 will
exceed 30 million lookups per second for IPv4 -- full table and lots
of peers.
Of course, that fails to accomodate RIB maintenance and FIB updates. It
also doesn't take into account modern SMP CPUs; the RIB-handling code is
still under development.
Eddy
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