We set up a connection between two sites that required a 'hop' in between. The setup is as follows:
LOCAL LAN --> ROOT w w w w w w NON-ROOT -->ETH <-- NON-ROOT w w w w ROOT <-- REMOTE LAN
So we have one of the ROOT AP's connected to the local LAN at the Main Site. At the 'hop' the two NON-ROOT AP's are connected to each other via a single Ethernet cable. Then the other ROOT is connected at the remote LAN.
I just want to make sure that this is the best way. Everything works well, just want to make sure I'm not missing anything.
Use different channels, and you can think of each link independantly. You could have your RB and NRBs on either side of the link, but with your present description (Roots at the ends), both RBs can run their channel optimization algorithm and select the best bi-directional throughput channels for both connections. If both center bridges are using the same pole, it's recommended to try and separate them by 2m (6 feet) if you can.