Brocade Mobility Access Point System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 108)

98 Brocade Mobility Access Point System Reference Guide
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NOTE
Brocade Mobility 1220 Access Point, Brocade Mobility 1220 Access Point, Brocade Mobility 1240
Access Point, Brocade Mobility 7131 Access Points can support up to 256 client connections to a
single access point radio. Brocade Mobility 6511 Access Point (both single radio models) can
support up to 128 client connections to a single radio.
Antenna Gain Set the antenna from 0.00 - 30.00 dBm. The access point’s Power Management Antenna
Configuration File (PMACF) automatically configures the access point’s radio transmit power based
on the antenna type, its antenna gain (provided here) and the deployed country’s regulatory
domain restrictions. Once provided, the access point calculates the power range. Antenna gain
relates the intensity of an antenna in a given direction to the intensity that would be produced
ideally by an antenna that radiates equally in all directions (isotropically), and has no losses.
Although the gain of an antenna is directly related to its directivity, its gain is a measure that takes
into account the efficiency of the antenna as well as its directional capabilities. Brocade
recommends that only a professional installer set the antenna gain. The default value is 0.00.
Antenna Mode Set the number of transmit and receive antennas on the access point. 1x1 is used for
transmissions over just the single “A” antenna. 2x2 is used for transmissions and receipts over two
antennas for dual antenna models. 1xAll is used when transmission occurs on one antenna and is
received on all receiving antennas. The default setting is dynamic based on the access point model
deployed and its transmit power settings.
Enable Antenna Diversity Select this option to enable the radio to have antenna diversity for transmit frames at non 802.11n
data rates. This setting is disabled by default.
Wireless Client Power Select this option to manually set the radio’s transmission power (in dBm) to connected clients. The
setting is disabled by default.
Dynamic Chain Selection Select this option for the radio to dynamically change the number of transmit chains. This option is
enabled by default.
Data Rates Once the radio band is provided, the drop-down menu populates with rate options depending on
the 2.4 or 5.0 GHz band selected. If the radio band is set to Sensor or Detector, the Data Rates
drop-down menu is not enabled, as the rates are fixed and not user configurable. If 2.4 GHz is
selected as the radio band, select separate 802.11b, 802.11g and 802.11n rates and define how
they are used in combination. If 5.0 GHz is selected as the radio band, select separate 802.11a
and 802.11n rates then define how they are used together. When using 802.11n (in either the 2.4
or 5.0 GHz band), Set a MCS (modulation and coding scheme) in respect to the radio’s channel
width and guard interval. A MCS defines (based on RF channel conditions) an optimal combination
of 8 data rates, bonded channels, multiple spatial streams, different guard intervals and
modulation types. Clients can associate as long as they support basic MCS (as well as non-11n
basic rates).
For more information on the 802.11n rates, see section
MCS Data Rates .
Radio Placement Use the drop-down menu to specify whether the radio is located Indoors or Outdoors. The
placement should depend on the country of operation selected and its regulatory domain
requirements for radio emissions. The default setting is Indoors.
Max Clients Use the spinner control to set a maximum permissible number of clients to connect with this
access point radio. The available range is from 1- 256 for Brocade Mobility 1220 Access Point,
Brocade Mobility 1220 Access Point, Brocade Mobility 1240 Access Point, Brocade Mobility 7131
Access Points and from 1-128 for Brocade Mobility 6511 Access Point model.
Rate Selection Methods Use the drop-down menu to specify the algorithm to use for rate selection. Select Standard to use
the standard rate selection algorithm. Select Opportunistic to use the Opportunistic rate selection
algorithm.