I have to connect two buildings to make one network. Each building has it's own internet connection, along with a SonicWall device for filtering. They were connected at one point using two EnGenius Bridge/AP devices. They were both replaced and now I can not get the buildings to communicate. Each building has it's own server and are on the same domain. They were able to share file's. I only want the two networks to talk to each other, keeping there own internet connection.
More aboutbridge buildings
Look into VPN
Call in a consultant! If they were on the same domain and can no longer communicate, you're going to have bigger issues than forming a bridge.