Basically, the header tells it all. I have two routers configured with the same SSID. The main router is upstairs, and the secondary router is downstairs.
Where I work, normally, the portable sees both routers with about the same strength. But the secondary router is not good for me (too much lost packages, etc.)
Is there a way to assign a name (upstairs/downstairs) to the MAC address of each router?
Edit the network connection (NetworkManager indicator -> Edit connections, then select your connection and click Edit). In the Wireless tab there's a textbox named BSSID. Type in there the MAC address of the router you want to use and the connection will be locked to it.