I have changed out routers on our WAN from Cisco 2611 to Cisco 2821 routers. I am getting unknown status on the new routers.
I have configured SNMP on the routers. What could be missing?
Have you done a "rediscover resources" from the System Manager node details page?It will no longer recognize the interfaces you were monitoring on the old routers.
Verify the version of SNMP- and the check if the IP addresses are from the previous devices.
Also re-check the config and make sure nothing is blocking port 161.