High CPU Utilization on Cisco 4510R switch with dual SUP V -10GE.

[Dipesh Patel]

Dear Experts,

We have a problem of igh CPU Utilization in Cisco 4510R-with dual SUP V-10G modules.

Cisco 4510R switch is the CORE switch and have 30 no's of VLans. It was running PVST/PVST+ previously. But Now we have migrated to MST. But after upgradation the CPU utilization reached alomst 98%.

Find the sh results other output is ommited:

Attached is one file which shows the MST configuration.

We have removed all the Redundant link from the CORE switch but the CPU utilizatio remain high only.

IOS of CORE switch : cat4500e-entservicesk9-mz.122-54.SG.bin

Kindly suggest how to troubleshoot and resolve the High CPU utilization problem.

Regards

[Dipesh Patel]

Dear All,

Pls reply.

[phetal401]

Dear Deepesh,

There are few issue with respect to implementation

1. Abnormal behaviour of MST
   
2. Cisco having CPU process scheduling bug with respect to MST methodology
   

Regards