We have a customer that has a network connection with his own IP addressing scheme different from ours.
He is physically connected to our LAN.
He wants to access our network and has statically natted his addresses to a 10.10.10.0 subnet.
Our 4503 switches have that subnet configured, but our servers are in the 10.10.20.0 subnet.
He can access the IP Address of the 4503 in the 10.10.20.0 space.
Idealy it looks like it would have been better to have him NAT his address to the 10.10.10.0 subnet.
What is the best way to get him to access the server across the subnet?
A secondary IP Address on the server maybe?