We have a router with two ISP connections going into each of the FastEthernet ports. One port, the primary, services Internet traffic. The secondary port is assigned into the VRF instance 'isp2'.
We have two Tunnel interfaces configured for DMVPN each one going to one of our two head office DMVPN routers. The primary tunnel is configured to route out the vrf 'isp2'. The secondary tunnel only comes online if the primary tunnel fails (due to secondary ISP failure) and routes over the primary ISP. This all works lovely.
Now, if the primary ISP link fails, the primary tunnel still runs (obviously) over the secondary ISP. However, all Internet traffic is lost at this branch. Is there an easy way, using this VRF configuration so have a failover configuration in which case Internet traffic could automatically be routed over the secondary ISP?
Please let me know if you need a better description and/or diagram. Thanks!