When implementing point-to-point secure WAN solutions over the Internet, which alternative Cisco IOS method is available if GRE-over-IPsec tunnels cannot be used?
A.
Virtual RoutingForwardings (VRFs)
B.
Virtual Tunnel Interfaces (VTIs)
C.
dynamic crypto maps
D.
GET VPN
E.
MPLS VPN
give me an example of a scenario where GRE-over-IPsec tunnels cannot be used?
0
0