We have two 6513's with a FWSM in each. They are currently in Active Passive Mode so they share the same config. Is there anyway to poll the passive mate via SNMP for Serial number etc?
There should be different ip address assigned to the standby fwsm.
If you do: "sh run interface", from the output, you should see 2 ip addresses per interface. The second ip address would be the one assigned to the standby fwsm.
interface vlan 10
ip address 18.104.22.168 255.255.255.0 standby 22.214.171.124
In the above case, 126.96.36.199 is the standby ip address.