LAN Router CPU Uti 99%

[lawwm]

Hi,

Anyone encounter this weird uti before? I have few 2500/2600 routers are having same problem. They are just for interfaces LAN/Token Ring only.

Is that IOS bug?

[Georg Pauwen]

Hello,

do you have network management systems polling your router ?

Try to turn on CEF and see if that makes a difference, also, have a look at this document:

IP Simple Network Management Protocol (SNMP) Causes High CPU Utilization

http://www.cisco.com/warp/public/477/SNMP/ipsnmphighcpu.shtml

Regards,

GP

[lawwm]

Hi GP,

I do have snmp enable. 1 srtring is for ciscowork. The other string is for monitor purpose. However, I do not have cef enable. I realized that every 4 hours the usage will hit 99%. I think most probably is cause by SNMP.

I will check it out the document. Thanks.