4510 High CPU per blade stats

[Marcin Zgola]

I am looking to troubleshoot high CPU on 4510. I enabled ISE(802.1x) on 4510, and CPU went up. I have a similar setup on another 4510 and CPU is normal. I think the problem is one of the older blades.. Is there a way to find out process/memory utilization per blade?

thanks

[Wilson Bonilla]

Hello Marcin.

Here is a very useful guide to troubleshoot high cpu in 4ks.

http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml

I always check for the commands:

These commands will give you a overview of what is going on.

Show process cpu sorted | ex 0.00

Show platform health

These debugs are very useful to understand what type of traffic is getting to the cpu: (Do NOT worry about the debugs they are CPU embedded and don't not cause any cpu overload)

Switch#debug platform packet all count

platform packet debugging is on

Switch#show platform cpu packet statistics

Switch#debug platform packet all receive buffer

platform packet debugging is on

Switch#show platform cpu packet buffered

You can even SPAN the cpu to determine with the help of wireshark what is getting cpu processed.

Switch(config)#monitor session 1 source cpu rx

Switch(config)#monitor session 1 destination interface gigabitethernet x/y

Regards.

Wilson B

Please rate useful post!

Regards.

Wilson B.