HIGH CPU on 4507

[Richard Lucht]

Recently we had some issue with High CPU on our 4507 that were tracked down to a hub plugged into 2 different VLANs.  Looking at the show platform health command I had a question on one item.

What is K5ForerunnerPacketMa?

4700-CORE-4507-1#sh platform health
                                      %CPU   %CPU    RunTimeMax   Priority  Average %CPU  Total
                                       Target Actual  Target Actual   Fg   Bg 5Sec Min Hour  CPU

K5ForerunnerPacketMa   1.50  20.07      4      0  100  500   15  18   15  682:39

[Madhukrishnan Gopinathan Nair]

Hi Richard,

 Forerunner is an ASIC/component on the supervisor that manages data traffic to/from the CPU. Its usual to see this process high along with K5CpuMan Review when CPU utilisation is high due to interrupts

Thanks,

Madhu

[Madhukrishnan Gopinathan Nair]

Hello Richard,

Is there anything else you are looking for? 

If the above ansewers you, kindly rate or mark as correct.

Thanks,

Madhu