Currently I have a Cisco 1941 router with redundant WAN connections via PBR; I can monitor the ip route via show ip route manually, but I would like a way to be automatically notified when one connection goes down and we switch to the backup route. Is this possible internally via Cisco's IOS?
The only alternative I can think of is to monitor traffic on each port via MRTG or something of the like and when traffic on WAN connection 2 goes above a certain threshold send out a notification.