I have a small office running a 2611XM with a NM-16ESW. I also have a t1 connection to the internet as well as a Cable Connection(ethernet to modem). I need to maintain a VPN connection to our corporate office via either connection. Preferably the Ethernet/Cable connection unless it goes down. If it does go down then I want it to use the T1. I want most traffic to use the Ethernet/Cable connection. However I also have a sip trunk to a sip provider. I want that to use the t1 all the time unless (you guessed it) the T1 goes down. In that case I would like it to use the Cable connection.
I need to setup redundancy and particular traffic paths. Any ideas?? I can model this out on my lab gear to be sure but I am hoping to get some starting points.