EIGRP snmp trap not generating on 2621XM

[Nachiappan Nachiappan]

I am having some trouble generating EIGRP SNMP traps from the 2621XM router. Please find the config below:

snmp-server ifindex persist

snmp-server trap-source FastEthernet0/0

snmp-server enable traps eigrp

snmp-server host  203.xx.xx.xx version 2c xxxxx [string name]

I have also enabled “snmp packet debugging on”. When I enable “link up down” traps, the device is sending a UDP packet to the SNMP-server and can see a trap being generated.  But whenever I unplug the cable to bring the Eigrp neighbors down, I don’t see a trap sent from the router.

I have two 2621XM routers set up in a lab environment to test the Eigrp trap. I am using the correct MIB file. But my understanding is even if the MIB file is not correct, I should see a UDP packet sent from the router on the debug output.

EMCPerth-Test-R1#sh ver

Cisco IOS Software, C2600 Software (C2600-ADVENTERPRISEK9-M), Version 12.4(15)T11, RELEASE SOFTWARE (fc2)

System image file is "flash:c2600-adventerprisek9-mz.124-15.T11.bin"

Thanks

Nachi

[Joe Clarke · Accepted solution]

The only two traps defined in the CISCO-EIGRP-MIB are cEigrpAuthFailureEvent and cEigrpRouteStuckInActive.  Neither would be generated simply by unplugging an interface cable.  There is no trap for a neighbor loss or route loss event.  The former trap is sent when there is an MD5 authentication mismatch seen for EIGRP where as the latter is sent when a route in the topology table is stuck in an active state.