i'm using IPSec+OSPF. There're the two possible solutions for protocol/transprot using Tunnel Interfaces:
a) GRE/IP with crypto-map, or
b) IPSEC/IP with crypto ipsec profile
What are the advantage/disadvantage using a) or b)...?
My main connection is based on direct Ethernet, but the backup solution depends on an E1 dialer-profile, so it's difficult to use dynamic routing for transport tunnel-source/-destination addresses and avoid from routing these addresse through the tunnel...