[c-nsp] Arp Input Process Causing Spike in CPU

[Gert Doering]

Hi,

On Thu, Mar 15, 2007 at 09:44:23AM -0400, Christian Koch wrote:
> I'm seeing cpu spikes due to  the arp input process running high ..
> 
> Currently every route is pointed to next hop and the arp table looks
> like..
> 
> #sh ip arp sum
> 1743 IP ARP entries, with 21 of them incomplete

1743 ARP entries?

Over *thousand seven hundred* entries?  What sort of networks have you
connected to this router...?

> Can anyone suggest how to reduce this for a short term fix... I know the
> long term is to upgrade the mem

Memory doesn't play a role in this.  Topology does, reasonably-sized
subnets, CoPP rate-limiting ARP storms, etc.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
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