[c-nsp] CPU anomoly on 3560G when adding a BGP peer

[Ivan Gasparik]

try to look at the output of 'show sdm prefer', especially at the 
line 'number of indirect IPv4 routes'. it looks like your BGP 
prefixes can't fit into the routing part of TCAM and some packets are 
beeing software switched.

ivan


On Wednesday 12 September 2007, christian wrote:
> whats the output of sho proc cpu sorted 5min  look like?
>
>
>
> On 9/11/07, Wyatt Mattias Ishmael Jovial Gyllenvarg <
>
> wyatt.eliasson at gmail.com> wrote:
> > Hi all
> >
> > We have a strange behavior on a 3560G that is running IBGP + some
> > EBGP.
> >
> > It is a route-reflector client to our one core machine and it
> > takes in a few EBGP peers.
> > Now we want a certain set of prefixes to go another way then the
> > core node calculates as "best".
> >
> > We there for setup a peer with another core node (not RR-client)
> > and filtered out the prefixes and set them weight 1 in the
> > incoming route-map.
> >
> > This all works well except we get 85% CPU usage and we cannot see
> > what process is using it.
> > All bgp ques are stable and the total prefix count is ~2000.
> >
> > I assumed it was a routing loop but could not trace it.
> >
> > Any guesses?
> >
> > Best regards
> > Mattias Gyllenvarg
> > Omnitron
> > Sweden
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