[nsp] High CPU utilization from traffic with no destination interface?

[Temkin, David]

Does anyone know the actual IOS architecture for handling packets that enter
the router where the router doesn't have a route for them?

I had a situation where a large amount of traffic was directed at one of my
routers that didn't have a route to the destination and the CPU was pegged
at 99%...  When I added an ACL blocking traffic to the networks that I
didn't have routes to, the utilization dropped dramatically.

Thanks,

-Dave


David Temkin
S-I-G
401 City Avenue
Bala Cynwyd, PA 19004
http://www.sig.com <http://www.sig.com> 



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