[c-nsp] 3750 high cpu from icmp

Brian Turnbow b.turnbow at twt.it
Mon May 14 05:29:53 EDT 2007


Yes and there were none.
The icmp queue debugs also list source / destination macs and Ips where you can see that it would be the 3750 that needs to generate a redirect.

Brian

-----Original Message-----
From: Adrian Chadd [mailto:adrian at creative.net.au] 
Sent: lunedì 14 maggio 2007 11.07
To: Brian Turnbow
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 3750 high cpu from icmp

On Mon, May 14, 2007, Brian Turnbow wrote:
> Wanted to post an update on this in case anyone else ever has problems.
> The only way I found to resolve this issue was to move traffic onto different interfaces , removing the router on a stick routing.

Did you stick the port into a SPAN group and get a traffic dump? See if some
other device is actually sending your 3750 ICMP redirects?




Adrian




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