Several Tunnels with the same distance network & destination in cryptographic maps

This maybe a newbie question, but I don't have production systems and don't really have a way to test our properly. We have an ASA 5520 with several tunnels from site to site. We already have a tunnel with one of the remote networks in 10.100.90.14. We have this IP on a subnet configured as remote network and the destination address in the card encryption. We also exempt rules NAT in place for our local network with the 10.100.90.14 address as the destination.

We have another tunnel that must be built and who will have a different address peer, but that requires a large number of subnets and at least we'll have the same remote network/destination address in the map encryption and VPN tunnel that we already have in place.

Is this possible to do with a tunnel of site to another without a static or dynamic NAT to a different IP address?

I know, with physical networks, that it is impossible because of the static routes that are in place, but with the ipsec tunnels I'm not sure how it works, and as mentioned, I'm not able to test it.

Any guidance would be appreciated.

Bill

The acl crypto map defines interesting traffic. If you have the same destination IP address, IE. 10.100.90.14 then if the source IE. the IP address of the client on your network is identical for the two tunnels, then no, it won't work and you will need to make some sort of NAT for one of the tunnels.

Jon

Tags: Cisco Security

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