6509 Switch utilizing heavy process

[IKRAM HUSSAIN]

We have two 6509 switches, using VSS. When I do sh proc cpu, it shows 70% to 90% utilization, which is too high I think for that kind of switch.

If anyone can help me in finding out, why it's utilizing that heavy process, appreciate it.

[Yudong Wu]

please post "show process cpu sort | e 0.00"

[IKRAM HUSSAIN]

Attaching the file

[Yudong Wu]

Ok, it might be related to ARP packet.

Can you check the "show interface" to see if there is any layer 3 interface (including vlan interface) with a high input queue drop and the drop count is incrementing as well?

If yes,  use "sh buffers input-interface x/y dump" to where those ARP packet come from.

[IKRAM HUSSAIN]

When I run, sh int command on one of the WAN interfaces I get the following message, is that an issue or not

Input queue: 0/75/1874015/0 (size/max/drops/flushes); Total output drops: 0

[Yudong Wu · Accepted solution]

You need find all layer 3 interfaces where input queue drop count is incrementing.

If it is incrementing on that port, you need to find out what packet is in input queue by using the command which I mentioned.

[IKRAM HUSSAIN]

The drops does not increase on the vlan interface as shown below

Input queue: 0/75/1874015/0 (size/max/drops/flushes); Total output drops: 0

It stays at the same number, please let me know, what are the next steps to look into.