GSR and bgp maximum-paths
Rob Evans
rhe at noc.ten-155.net
Wed Mar 7 18:39:49 UTC 2001
> 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.
However, this is starting to stray into cisco-nsp territory. :-)
Rob
More information about the NANOG
mailing list