Cisco 2811 with High CPU usage

[NetBegv85]

Hello

My router 2811 have high cpu usage (80%)

I haven't debug on my router.

When I take show proc cpu, the list of processes total up to less then 10%

I have lot of access-list (150) and 600 lines for it.

I have policy map for ftp, visio, P2P, smtp, ...

I have 15 ip inspect

100 Mb/s for the lan interface and 10Mb/s for the wan

I search command for see who is using the cpu.

Thanks,

[rfalconer.sffcu]

Did you run 'sh proc cpu sorted' to see what's the highest process?

Is the high utilization constant?

It's possible that your ACLs/Policy Maps are causing high CPU utilization due to interrupts.

Are you getting hits on all the ACLs and all elements in those ACLs?

[Lei Tian]

Hi,

The show pro CPU output tells you most CPU cycle are on interrupt level. You are giving too much works to the router:) There isn't a command to show process under interrupt; I think you have to do CPU profile to find out that information.
http://www.itcertnotes.com/2011/03/cisco-router-cpu-profiling.html?m=1

HTH,
Lei Tian

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