I have a 2851 router w/ IOS Adv. Services, w/ a point to point IPSec VPN setup to another 2811 router. I also am planning to setup a point-to-point T1 setup between these same two routers. My question is this:
Do IPSec VPN's use the default route for traffic? Or is there a 'hidden' route statement built when you create a VPN?
Assuming that typical Internet-based point to point VPN's use the default route, if I were to setup a GRE tunnel and run OSPF between the T1 routers, I would expect traffic to these sites to be routed via the T1, and in the event that the T1 link drops, it would be routed out via the default route, and thus, encrypted for VPN.
Am I correct in this assumption? Thanks all.