FW: [nsp] 7507 high cpu usage, ip rib update

[jlewis at lewis.org]

Is it possible this is the result of some kind of DoS traffic...and that 
it actually started before your provider reset a BGP session and the DoS 
on your router or link caused the session to reset?

What speed connections and interfaces do you have, and how much traffic 
are they passing?  Have you if-con'd to the VIPs to check CPU load on 
them?

On Fri, 7 Nov 2003, Jeffrey Wheat wrote:

> I'll try this again, has anyone seen anything like
> this or could offer suggestions? Any update, I have
> upgraded to 12.3.4T.
> 
> Many thanks.
> Jeff
> 
> I have had a 7507 with 2 full bgp views running without
> a hitch for over 27 weeks and then suddenly the router
> is borking on me. I am seeing high cpu utilization, am
> having "lockups" where am unable to ping through, the 
> interfaces show up/down and short of power cycling the 
> router, it remains in this state for well over 45 mins.
> 
> The router is running 12.2.13T, has a RSP4, 256M RAM.
> The problem began early Monday when one of my upstreams
> reset the BGP session with us. I see that the IP RIB
> UPDATE process is consuming large amounts of the cpu.
> 
> Has anyone else seen anyone like this recently? It seems
> very odd for this to just happen out of the blue.
> 
> Regards,
> Jeff
> 
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----------------------------------------------------------------------
 Jon Lewis *jlewis at lewis.org*|  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |  
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