I have one 3845 router each in site A and B. They have primary connection through WAN cloud and also GRE tunnel over IPSec in between as backup. WAN side has EIGRP and the tunnel has OSPF. Within each site, internal routing is OSPF too.
For some reason, I need to diable the tunnel when both site's WAN is up, and enable the tunnel when either site's WAN is down. How to configure object tracking to do it? I have not found a good reference.
Thanks a lot