Re: [nsp] High CPU with NAT - some output

From: Gert Doering (gert@greenie.muc.de)
Date: Tue Jul 10 2001 - 08:32:26 EDT


Hi,

On Tue, Jul 10, 2001 at 09:12:37AM -0300, Marcio Pilotto wrote:
> - show process cpu
> --------- output being ---------------
> CPU utilization for five seconds: 21%/13%; one minute: 21%; five minutes:
> 21%
> -------- output end ------------------

That doesn't look overly high to me.

> CEF is enable at all interfaces but CEF does not work with NAT!

At least per the docs, it should - quoting from
http://www.cisco.com/warp/public/cc/pd/iosw/ioft/iofwft/prodlit/iosnt_qp.htm

"Q. What kind of routing performance can I expect when I use Cisco IOS NAT?

A. Cisco IOS NAT supports Cisco Express Forwarding (CEF) switching,
Fast-switching and of course Process switching. "

> With show interfaces switching command we can see that all output packets
> are process switching. It does not care if you use netflow switching, fast
> switching or even CEF.

Maybe you should use an IOS version with less letters in it :-) -
IOS-Versions with two or more letters tend to be "interesting".

gert

-- 
USENET is *not* the non-clickable part of WWW!
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Gert Doering - Munich, Germany                             gert@greenie.muc.de
fax: +49-89-35655025                        gert.doering@physik.tu-muenchen.de



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