CSCva70427 - Cat4500x-16 VSS high cpu with 16k ARP entries > K5L3Unicast Adj Tabl

[awadsaad]

Hi,

we have

AGG1#sh proc cpu sort | exc 0.00
Core 0: CPU utilization for five seconds: 54%; one minute: 58%; five minutes: 54%
Core 1: CPU utilization for five seconds: 41%; one minute: 44%; five minutes: 50%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
5024 2592453 42991613 845 47.08 50.72 51.39 0 iosd
4982 4280782 16717123 256 0.60 0.53 0.52 0 ffm
4962 624106 10747699 58 0.08 0.08 0.08 0 pdsvslifshim
4352 205254 235056 873 0.04 0.04 0.04 0 sh
4960 90555 8750714 10 0.04 0.01 0.01 1088 platformmgr
4972 108509 2468319 43 0.04 0.04 0.02 0 plogd
4974 1106424 46322836 23 0.04 0.09 0.11 0 pdsd
4980 81179 478943 169 0.04 0.01 0.01 0 licensed

and Cisco reply for our case with

Thank you. I have reviewed the outputs and the issue is pointing to below bug.

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCva70427

Fixed version has not been release yet, however we have a workaround. Please follow the workaround and observe.

Workaround:

- Clear ARP cache size

- Decrease ARP cache size by changing the environment or timers

what is your experience for that issue?

did anybody try another solution?

[daielumoh]

Hello everyone,

- Can someone let us know how to do the requested work-arounds ?

Is "clear arp-cache" the same thing as "clear arp cache size" ? if not, what are the commands used to clear arp cache size on a Catalyst 4500

- Also how do we change the arp timers ?

Thanks,