[c-nsp] High CPU Utilisation

[Rodney Dunn]

On Mon, Jun 20, 2005 at 09:18:37AM -0400, Alex Rubenstein wrote:
> 
> 
> 
> On Mon, 20 Jun 2005, Rodney Dunn wrote:
> 
> > That's incorrect. If you have CEF on globally that enables it
> > for every interface in the box that is capable of doing CEF.
> 
> not if there is a 'no ip route-cache cef' on each interface, which he did 
> or did not specify.
> 
> Considering he is seeing very high IP Input usage, and he may have already 
> had 'ip cef' enabled globally and 'no route-cache cef'...

Or he could have features enabled that cause punts: ie: NAT on that code...

> 
> 
> 
> > You should NEVER modify the per interface fastswitching/CEF flags
> > via the "ip route-cache <blah>" commands unless you do it just
> > as a SHORT TERM workaround for a switching path bug.
> 
> Was I disagreeing with you? :)

No, I'm just on my Monday morning coffee high and I get tired of looking
at configurations with the per interface switching flags toggled and people
saying "I don't know why these are changed". :)

> 
> 
> 
> 
> -- 
> Alex Rubenstein, AR97, K2AHR, alex at nac.net, latency, Al Reuben
> Net Access Corporation, 800-NET-ME-36, http://www.nac.net