
Configuring the Altitude AP
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 User Guide
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If DRM is enabled (DRM is enabled by default), it scans automatically for a channel, using a
channel selection algorithm. For more information, see “Configuring Dynamic Radio
Management” on page 77.
■ Tx Power Level – Select the Tx power level: Min, 13%, 25%, 50%, or Max. If Dynamic Radio
Management (DRM) was enabled on the DRM screen, this option is read-only.
■ Rx Diversity – Select Best for the best signal from both antennas, or Left or Right to choose
either of the two diversity antennas. The default and recommended selection is Best. If only
one antennae is connected, use the corresponding Left or Right diversity setting. Do not use
Best if two identical antennas are not used.
■ Tx Diversity – Select Best for the best signal from both antennas, or Left or Right to choose
either of the two diversity antennas. The default selection is Best, which maximizes
performance for most clients. However, some clients may behave oddly with Tx Diversity set
to Best. Under those circumstances, it is recommended to use either Left or Right for Tx
Diversity. If only one antennae is connected, use the corresponding Left or Right diversity
setting. Do not use Best if two identical antennas are not used.
■ Min Basic Rate – Select the minimum data rate that must be supported by all stations in a
BSS: 1, 2, 5.5, or 11 Mbps for 11b and 11b+11g modes. Select 1, 2, 5.5, 6, 11, 12, or 24 Mbps for
11g-only mode. If necessary, the Max Basic Rate choices adjust automatically to be higher or
equal to the Min Basic Rate. If both Min Basic Rate and Max Basic Rate are set to an 11g-
specific (OFDM) rate, (for example, 6, 12, or 24 Mbps) all basic rates will be 11g-specific.
■ Max Basic Rate – Select the maximum data rate that must be supported by all stations in a
BSS: 1, 2, 5.5, or 11 Mbps for 11b and 11b+11g modes. Select 1, 2, 5.5, 6, 11, 12, or 24 Mbps for
11g-only mode. If necessary, the Max Basic Rate choices adjust automatically to be higher or
equal to the Min Basic Rate. If both Min Basic Rate and Max Basic Rate are set to an 11g-
specific (OFDM) rate, (for example, 6, 12, or 24 Mbps) all basic rates will be 11g-specific.
■ Max Operational Rate – Select the maximum data rate that clients can operate at while
associated with the AP: 1, 2, 5.5, or 11 Mbps for 11b-only mode. Select 1, 2, 5.5, 6, 9, 11, 12, 18,
24, 36, 28, or 54 Mbps for 11b+11g or 11g-only modes. If necessary, the Max Operational Rate
choices adjust automatically to be higher or equal to the Min Basic Rate.
■ No of Retries for Background BK – Select the number of retries for the Background
transmission queue. The default value is 4. The recommended setting is adaptive (multi-rate).
■ No of Retries for Best Effort BE – Select the number of retries for the Best Effort transmission
queue. The default value is 4. The recommended setting is adaptive (multi-rate).
■ No of Retries for Video VI – Select the number of retries for the Video transmission queue.
The default value is 4. The recommended setting is adaptive (multi-rate).
■ No of Retries for Voice VO – Select the number of retries for the Voice transmission queue.
The default value is 1. The recommended setting is adaptive (multi-rate).
■ No of Retries for Turbo Voice TVO – Select the number of retries for the Turbo Voice
transmission queue. The default value is 1. The recommended setting is adaptive (multi-rate).
■ Preamble – Select a preamble type for 11b-specific (CCK) rates: Short, Long, or Auto. The
recommended value is Auto. Select Short if you are sure that there is no pre-11b AP or a client
in the vicinity of this AP. Select Long if compatibility with pre-11b clients is required.
■ Protection Mode – Select a protection mode: None, Auto, or Always. The default and
recommended setting is Auto. Select None if 11b APs and clients are not expected. Select
Always if you expect many 11b-only clients.
■ Protection Rate – Select a protection rate: 1, 2, 5.5, or 11 Mbps. The default and recommended
setting is 11. Only reduce the rate if there are many 11b clients in the environment or if the
deployment has areas with poor coverage. For example, rates lower than 11 Mbps are required
to ensure coverage.
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