CPU utilisation 95 %

[Suneelkumar V R]

Hi All can you please let me know what is this process 

40 1859338560 681519081 2728 17.57% 16.50% 16.60% 0 Cat4k Mgmt HiPri
41 6416320402177719280 294 62.21% 62.56% 61.73% 0 Cat4k Mgmt LoPri

why this is taking high CPU due to this my switch causing 95% utilisation and  users are experiencing slowness

please help how to rectify this

Thanks

Suneelkumar 

[Reza Sharifi]

Hi,

Have a look at this document on high CPU on the 4500 series.

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-4000-series-switches/65591-cat4500-high-cpu.html

HTH

[Suneelkumar V R]

Hi,

One of the module was having the issue we have shutdown the ports in the module

Now its fine.

thanks

suneelkumar 

[Austin Sabio]

The proper way is to troubleshoot this by identifying the specific process within Cat4k Mgmt HiPri and Cat4k Mgmt LoPri using show platform health. 

"This show processes cpu output shows that there are two processes that use the CPU— Cat4k Mgmt HiPri andCat4k 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.

In order to see which of the platform-specific processes use the CPU under the context of Cat4k Mgmt HiPri and Cat4k Mgmt LoPri , issue the show platform health command."

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/troubleshooting/cpu_util.html

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-4000-series-switches/65591-cat4500-high-cpu.html.

Sidenote: Make sure following are disabled. 

no ip mask-reply
no ip redirects
no ip proxy-arp

Please rate, if helpful 

Thank you.