Cisco 7606 CPU Usage Problem

Shawn L shawnl at up.net
Wed Feb 5 13:24:50 UTC 2014


We had some similar issues whenever the BGP scanner process was running.
Ultimately we tracked down the issue to an access list that had the 'log'
statement appended to it, so it was logging all denies.  Removing that
cleared up the issue.


On Wed, Feb 5, 2014 at 2:34 AM, Shahab Vahabzadeh
<sh.vahabzadeh at gmail.com>wrote:

> Hi there,
> I have a Cisco 7606 with this module on it:
>
> WS-SUP32-GE-3B
>
>
> and I am using its own 8 port like this:
>
> 2 Port Layer two ether-channel uplink to my 4900 Cisco Switch and 1 Layer
> two uplink to Internet, and near 10 tunnel to my customers for internet
> exchange with BGP peering + some policy map for shaping tunnel interfaces.
> My ether-channel traffic on 600Mbps (each port 300Mbps) I get 90% cpu load
> and ping time problem on my router, what is the problem??
> And when I run: show processs cpu sorted
> I get a "Unknown" process eat the cpu process...
> I try lots of IOS version but it does not make difference.
>
> My IOS version is:
>
> c7600s3223-adventerprisek9-mz.150-1.S1.bin
>
>
>
> and some general configuration:
>
> no ip source-route
> > !
> > ip cef load-sharing algorithm original
> > no ip domain lookup
> > !
> > !
> > !
> > !
> > mls ip cef load-sharing full
> > no mls flow ip
> > no mls flow ipv6
> > mls qos
> > mls cef error action reset
> > multilink bundle-name authenticated
> > !
> > spanning-tree mode pvst
> > spanning-tree extend system-id
> > system flowcontrol bus auto
> > diagnostic bootup level minimal
> > port-channel load-balance src-ip
> > username admin secret 5 $1$g6WX$LaQbPyD3qIaHsF5qTqt8g0
> > !
> > redundancy
> >  main-cpu
> >   auto-sync running-config
> >  mode sso
> > !
> > !
> > !
> > !
> > vlan internal allocation policy ascending
> > vlan access-log ratelimit 2000
>
>
> Thanks
>
> --
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
>
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367 BF90
>


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