Select the frequency band (2.4 GHz vs. 5 GHz) is a prerequisite for
selecting the channel. Channel selection is useful primarily as follow:
- Restrict to a particular access point when multiple access points use
the same SSID (AP name) but are available on different frequencies.
- Configure for a particular ad-hoc mesh network.
- Setup multiple access points from a single FreedomBox on multiple
channels to maximize the throughput and number of simultaneous
clients.
Ability to specify a particular BSSID will help associate with a
particular access point when multiple access points use the same
SSID (AP name). This is also makes it slightly harder to trick clients
into connection to a malicious device. Also configuring BATMAN-adv
seems to require setting a particular BSSID.