[c-nsp] RIP breaks with CEF enabled

[Rubens Kuhl Jr.]

Is "ip unicast verify reverse-path" configured ? It is activated only
when CEF is running. Doing a "show ip traffic" will show you drop
counters, if RPF counters are increasing, then you have asymmetric
routing causing RPF drops.




Rubens


On 9/26/06, Adam Maloney <adam at whee.org> wrote:
> Ran into a strange problem the other day on a 7206VXR running 12.2.  When
> CEF is enabled, I stopped getting RIP updates.  As soon as I disabled CEF,
> RIP started seeing the updates.
>
> With CEF enabled, I turned on IP packet debugging (test environment with
> no traffic), the only thing I saw was "CEF: Try to CEF switch x.x.x.255
> from FastEthernet0/0"  Debugging ip rip events didn't show anything coming
> in, just the RIP sends from that router.
>
> I googled that and checked bugtool but didn't find anything useful.
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