I have recently observed heavy CPU usage on one of our Cisco 1812W routers. I have been unable to find the cause of this, since the "sh proc cpu" does not show which process uses the CPU. The two command outputs below are taken at the same time. The IOS IS:
Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(15)T1, RELEASE SOFTWARE (fc2)
Any help in finding the cause will be greatly appreciated.
I have attached the config for the router (some line have been removed). I have also attached a text file containing the output of "sh proc cpu his" and "sh proc cpu" (taken at the time of the high cpu utilization).
Please note that this router has a rather (for us at least) unusual setup where is has two physical WAN connection and I use PBR to route packets out of the correct interface based on the destination IP address. I suspect that this is the cause somehow - maybe I configured it incorrectly?
Thanks in advance