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@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