[36191] in North American Network Operators' Group
Re: GSR and bgp maximum-paths
daemon@ATHENA.MIT.EDU (Jon Allen Boone)
Thu Mar 29 19:49:28 2001
To: Rob Evans <rhe@noc.ten-155.net>
Cc: James DeMong <James.DeMong@telus.com>,
"'Nanog@Merit.Edu'" <Nanog@Merit.Edu>
From: Jon Allen Boone <tex@delamancha.org>
In-Reply-To: Rob Evans's message of "Wed, 7 Mar 2001 18:39:49 +0000"
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Date: 29 Mar 2001 19:44:11 -0500
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Errors-To: owner-nanog-outgoing@merit.edu
Rob Evans <rhe@noc.ten-155.net> writes:
> > Is anyone else have any problems with "maximum-paths" on a GSR and if yes,
> > what release of IOS? Any other issues I should be aware of?
>
> It may not affect you (given you are running 12.0(10)S), but having
> maximum-paths set to something other than 1 can cause problems on
> Engine 2 linecards. The result is that the CEF IPC Background
> process eats all available linecard CPU. Packet forwarding is not
> directly affected, but it can mean that the CEF tables take a long
> time to converge after a routing flap.
>
> As far as I am aware the bug was introduced around 12.0(13.6)S, and
> has not been fixed in any releases so far.
BugTrack ID?
-tex
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Jon 'tex' Boone (610) 466-0477
tex@delamancha.org http://delamancha.org
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