[46686] in North American Network Operators' Group
Re: Load balancing in routers
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Mon Apr 8 15:11:35 2002
Message-ID: <02ac01c1df31$1ec9fcb0$e1876540@amer.cisco.com>
From: "Stephen Sprunk" <ssprunk@cisco.com>
To: "Mark Kent" <mark@noc.mainstreet.net>, <steve@opaltelecom.co.uk>
Cc: <nanog@merit.edu>
Date: Mon, 8 Apr 2002 14:03:41 -0500
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Thus spake "Mark Kent" <mark@noc.mainstreet.net>
>
> >> another thing is you will see increased latency and jitter as your
packets
> >> individually queue for cpu process time
>
> Thanks, that statement is significantly different than:
>
> 1) That is very deadly
> 2) If you want to crater your router, sure
>
> both referring to "no ip route-cache"
>
> I was just pushing for more moderate statements :-)
We were assuming he was actually pushing traffic, not using the router for a
doorstop.
An NPE-200 should push around 200kpps (no features) using CEF; that drops to
less than 15kpps with process switching. Lowering a router's performance by
over 90% qualifies as "cratering" in my world.
S
