I'm thinking of getting Airport Extreme dual-band version, because specs say that it offers 2 separate networks: 2.4 & 5 GHz. This setup would work great at my place, since I have mix of G and N devices.
Now, to implement this, do I need to create two separate networks, or I join one network and AEBS decides which band to assign?
This is direct quote from the manual, but it feels bit vague: "Wireless devices join the network that provides them the best performance and compatibility, and the AirPort Extreme shares your broadband Internet connection with computers and devices on your network."