It's been too long since I took Cisco, and I am sure this can be done but cannot recall how to do it, with subnets on different sides of the router/s. I will not be doing it myself, but am advising as others say it cannot be done. I do not need details, but only confirmation that this can happen.
This is a Cisco shop. Bld A and Bld B are not connected directly. I am not sure of all of topology, but basically they are in the same network but different subnets, and are connected to a router in Area C. We need to connect a few ports on BldA/Switch1, to ports on BldB/Switch2 so that they are a VLan.