Re: [Netdisco] arpnip creates high switch cpu

[Ingen S. J. v. (ICTS) <j.v...@ut...>]

Walter,

For what it's worth: our 6509's with SUP720 also have high CPU spikes
for several minutes caused by Arpnip & Macsuck processes, but the "SNMP
Engine" process is scheduled with one of the lowest priorities in IOS.
I've never seen any impact on traffic forwarding caused by high CPU in
SNMP though. OTOH, high CPU usage in other processes can be a concern,
especially it it's a process like "IP Input", "ARP Input" or "FM Core".

Still it's true that "arpnip" over SSH should be easier on the box
because it's implemented more efficiently.


Regards,

Jeroen van Ingen
ICT Service Centre
University of Twente, P.O.Box 217, 7500 AE Enschede, The Netherlands


On Thu, 2011-10-13 at 08:29 -0500, Walter Gould wrote:
> David & Brian,
> 
> Thanks for your replies..  David - would you mind sending me the 
> arpnip_ssh code that you mentioned below?  That might help us for those 
> few switches with the larger arp tables.  I believe this particular 6513 
> is running a sup720..
> 
> Thanks,
> Walter