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high cpu utilization

Dear all

For the normail time, The cpu utilization of L3 Switch (4507R Version 12.2(20)EWA) about 30%-40%.

For now, It about 60%-70%.

I didn't change any configuration of the switch.

I attached a file that contain the output of "show tech-support".

Please advice me how to solve this issue.

Thank you



Re: high cpu utilization


A Quick at your cpu stats shows that "Virtual Exec" task is taking more cpu cycles.

Probably if you have captured the show tech-support output via a telnet session, that could contribute to the cause for this and if so we can ignore this process.

I could also see the following processes eating up a lot of cpu cycle.

Cat4k Mgmt HiPri and Cat4k Mgmt LoPri .

These two processes aggregate multiple platform-specific processes which perform the essential management functions on the Catalyst 4500. These processes process control plane as well as data packets that need to be software-switched or processed.

Have a look at this URL, which will help you troubleshoot the root cause of this.

Follow the steps as outlined in the above URL to diagnose where the problem is.