308 Configuring APs

NN47250-500 (Version 03.01)

Changing transmit rates

Each type of radio (802.11a, 802.11b, and 802.11g) that provides service to an SSID has a set of rates the radio
is allowed to use for sending beacons, multicast frames, and unicast data. The rate set also specifies the rates
clients must support in order to associate with a radio. Table 15 lists the rate settings and their defaults.

Table 15: Transmit rates

Parameter Default Value Description

mandatory 11a— 6.0,12.0,24.0
• 11b—1.0,2.0
• 11g—1.0,2.0,5.5,11.0
Set of data transmission rates that clients
are required to support in order to
associate with an SSID on an AP radio. A
client must support at least one of the
mandatory rates.
These rates are advertised in the basic rate
set of 802.11 beacons, probe responses,
and reassociation response frames sent by
AP radios.
Data frames and management frames sent
by AP radios use one of the specified
mandatory rates.
The valid rates depend on the radio type:
11a—6.0, 9.0, 12.0, 18.0, 24.0, 36.0,
48.0, 54.0
11b—1.0, 2.0, 5.5, 11.0
11g—1.0, 2.0, 5.5, 6.0, 9.0, 11.0, 12.0,
18.0, 24.0, 36.0, 48.0, 54.0
Use a comma to separate multiple rates;
for example: 6.0,9.0,12.0
disabled None. All rates applicable to the
radio type are supported by
default.
Data transmission rates that AP radios will
not use to transmit data. This setting
applies only to data sent by the AP radios.
The radios will still accept frames from
clients at disabled data rates.
The valid rates depend on the radio type
and are the same as the valid rates for
mandatory.
If you disable a rate, you cannot use the
rate as a mandatory rate or the beacon or
multicast rate. All rates that are applicable
to the radio type and that are not disabled
are supported by the radio.
beacon-rate • 11a—6.0
• 11b—2.0
• 11g—2.0
Data rate of beacon frames sent by AP
radios. This rate is also used for
probe-response frames.
The valid rates depend on the radio type
and are the same as the valid rates for
mandatory. However, you cannot set the
beacon rate to a disabled rate.