[cisco-voip] One CM and several identical networks

[Andrius Kislas]

Hello,

I have a question about CallManager working as a SCCP signaling provider
for several networks using VPN over Internet. It so happens that two
networks are with the same IP adresses (192.168.0.x/24). What is the
"best practice" in such situation for CM to distinguish these networks?
I thought about two solutions:

1) Put a secondary IP address on CM for the second identical network.
Then the make policy routing on a router, so that packets FROM one CM
address goes to the first network, and packets FROM the second address
goes to the second network.

2) Configure NAT on VPN tunnels, so that packets from first network
reaches CM as one IP address and packets from second networks reaches CM
with second address.

I haven't tried neither of these solutions. Maybe there is more
intelligent way of solving the problem?

Andrius