There are several ways in which this can be implemented. I have implemented this environment with IPSec VPN tunnels to implement redundancy. The way that we did it was to run two tunnels, to run a dynamic routing protocol over the tunnels (we chose EIGRP but any dynamic interior protocol would do), and manipulated the routing metric to use one tunnel as primary and one tunnel as backup. In this case we added a second instance of the crypto key for the second peer, and added a second instance in the crypto map (crypto map aa 20 ipsec-isakmp).
You can do this with routing protocols, if you have multiple paths to the same destination just fine tune your routing protocols. In case of Eigrp modify the bandwith of the Tunnel (higher is better) in case of OSPF modify the cost of the Tunnel (lower is better). I also use two tunnels to the same destination and I prioritize one of them with bandwith command. Be sure that in case of Eigrp on both end of the tunnel you use the same bandwith value - anyway traffic goes on tunnel A and could be happen to come back on tunnel B....
If you need more info please explain your routing habits...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.