Product and Software: This article applies to all Aruba controllers and ArubaOS versions.
Current Wi-Fi systems are either 2.4 GHz (IEEE* 802.11b and 802.11g) or 5 GHz (IEEE 802.11a). These Wi-Fi systems use a single channel to send and receive information. Channel bonding allows Wi-Fi systems to use two channels at the same time.
When two channels are used, the performance of the connection improves from a maximum speed of 54 Mb/s to a maximum of 600 Mb/s.
A single channel is 20 MHz in width. When two channels are bonded, they are a total of 40 MHz. It is possible to use either 20 MHz or 40 MHz channels with IEEE 802.11n.
By default, 40 MHz is available on 5 GHz and 20 MHz is available on 2.4 GHz.
To use 20 MHz, use the webUI or CLI in ARM to set 40MHz-allowed-band to none.
config# rf arm-profile "default"