[c-nsp] SNMP trap for default route change?

[Rick Martin]

Is there a specific SNMP trap that can be sent in the event that the default route flips from one interface to another? In particular I want to know if the default route changes from T1 to 3gHWIC in Cisco ISR platforms.

If not via SNMP trap what are other ways of knowing when the default route changes? In our scenario we are running EIGRP on the Frame Relay interface and "Mobile IP" routing protocol  on the 3G interface.

We have seen issues with the frame relay interface loosing EIGRP neighbor without actually dropping the frame relay interface - which would give us an interface down alarm.

Thanks in advance for any suggestions.