nanog mailing list archives

Re: GSR and bgp maximum-paths


From: Jon Allen Boone <tex () delamancha org>
Date: 29 Mar 2001 19:44:11 -0500


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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