[c-nsp] 3750 12.2(44)SE1 CPU 5% weirdness

[Andre Beck]

Hi Paul,

On Sun, May 11, 2008 at 06:26:24PM -0400, Paul wrote:
> Anyone out there have 3750 running 12.2(44)SE1 ?
> Strange issue with the CPU sitting at 5% no matter what is going on, 
> zero traffic or lots of traffic.
> Simple config, very few routes, 2 etherchannels, nothing major.

This is normal for those platforms which do almost all that is essential
in forwarding traffic using their ASICs, with only initial packets of
new flows beeig punted up to the CPU. What you see is mostly housekeeping
like STP, your IGP running etc. On the old XL series the load was very
high, and the offender was - hold your breath - the process that made
the front LEDs blink.

3560E-24	5.51%
3560E-48	7.47%
2970G-24	4.90%
3548XL		52.20%

Seems still be count-of-LEDs dependend ;)
 
> Just curious.. It's not affecting anything except the ping time when you 
> ping the switch directly.

Well, "Routers are no PING servers" and all that.

Andre.
-- 
   Real men don't make backups of their mail. They just send it out
    on the Internet and let the secret services do the hard work.

-> Andre Beck    +++ ABP-RIPE +++      IBH IT-Service GmbH, Dresden <-