We have test environment that is a duplicate of our production environment. The test
and production environments both have hosts on two different subnets (172.16.12.0/24 and
172.16.22.0/24). We want to be able to access the test environment from the production
environment via natted addresses. It's not possible to change the actual IP addresses
of the hosts in the test environment in this case.
So from a workstation on the corporate LAN(172.16.40.0/24) we want to be able to access
Production server A on(172.16.22.50), and (identical)Test server A on say 172.26.22.50
which NAT translates back to 172.16.22.50 in the test environment.
Currently the test environment is built on a free-standing 3750 layer3 IOS switch using
EIGRP routing between subnets (on the same switch).
The production environment lives on a 6509 core also running layer3 IOS with EIGRP
Ideally we'd like to connect the 3750G (Test) switch to the product (6509) switch and
use EIGRP to route between them.
Any ideas or suggestions would be most welcome. We're open to dedicating a router to
this if necessary but it would be ideal to do this in layer3.