I am trying to build a DMVPN as a backup for our MPLS WAN. The MPLS network is using BGP for its routing protocal and I would also like to use BGP on the DMVPN. The routers in each branch will have a DSL connection on its second ethernet interface. I have a separate 2811 router in the home office that will handle the DMVPN. My question is how can up update the BGP table for all the sites to see the second route through the DMVPN if the MPLS goes down? Should I put static routes into the table using a higher wieght for the DMVPN routes?
I have this problem too.