User guide
Modifying Altitude AP settings
Summit WM Series WLAN Switch and Altitude Access Point Software Version 4.1 User Guide
67
some channels may be restricted. The default value is based on North America. The Auto
selection allows the Altitude AP to select the appropriate channel automatically. For more
information, see Appendix B, “Regulatory Information.”
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 – For each radio, 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 – For each radio, 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 antenna is connected, use the corresponding Left or Right diversity setting. Do not use
Best if two identical antennas are not used.
● TX Diversity – For each radio, 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 antenna is connected, use the corresponding Left or Right diversity setting. Do not use
Best if two identical antennas are not used.
● Operational Rate Set – For each radio, select the data rate that clients can operate at while
associated with the AP: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, or 54 Mbps. The Best data rate allows
the Altitude AP to select the best data rate automatically.
● Basic Rates – Select the data rates that must be supported by all stations in a BSS: 1, 2 or 1, 2, 5.5,
and 11 Mbps.
● 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.
● Protection Type – Select a protection type: CTS Only or RTS CTS. The default and
recommended setting is CTS Only. Select RTS CTS only if an 11b AP that operates on the same
channel is detected in the neighborhood, or if there are many 11b-only clients in the environment.
● Min Basic Rate – For both radios, 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 – For both radios, 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,