Product and Software: This article applies to ArubaOS 3.1 and later.
Basic rates are the data rates that must be supported by a station if it has to connect to a network. A station that successfully associates to an AP must be able to support these rates.
These rates (5.5 and 11) were introduced with 802.11b standard and they are an indication of the rates that the AP supports. These rates are optional, which means clients do not have to support these rates to be able to connect to the AP.
Extended Supported Rates
With the introduction of 802.11g, it was possible to transmit data at higher rates using OFDM. Another set of rates, called Extended Supported Rates, was created to accommodate for higher transmission rates. These rates are 6, 9, 12, 18, 24, 36, 48, and 54. These rates are optional, which means that the client does not have to be able to support these rates to connect to AP.
This is equivalent of Basic Rates. Clients must be able to support these rates if they are to connect to AP. All broadcast and control traffic is sent at lowest configured rate.
This is equivalent of Supported Rates and Extended Supported Rates. The tx-rate controls the rates that an AP will be able use.