Scenario is that ,Main office (india) connected to 2 branch office ,one in india another in US.
There is a MPLS link between main office & US,from main office to branch office (india) is a point to point link.
If MPLS link goes down,we initiate traffic manually from firewall.
We want an automated switch over,that is if MPLS link is down automatically it as to go through the tunnel.
In this scenario ,is it possible to configure GRE or any other option .
At the perimeter of all the branches is cisco routers.