564| Access Points AOS-W 6.5.3.x| User Guide
Parameter Description
Reduce Cell Size (Rx
Sensitivity)
The cell size reduction feature allows you manage dense deployments and to
increase overall system performance and capacity by shrinking an AP’s receive cov-
erage area, thereby minimizing co-channel interference and optimizing channel
reuse. This value should only be changed if the network is experiencing performance
issues. The possible range of values for this feature is 0-55 dB. The default 0 dB reduc-
tion allows the radio to retain its current default Rx sensitivity value.
Values from 1 dB - 55 dB reduce the power level that the radio can hear by that
amount. If you configure this feature to use a non-default value, you must also reduce
the radio’s transmission (Tx) power to match its new received (Rx) power level. Failure
to match a device’s Tx power level to its Rx power level can result in a configuration
that allows the radio to send messages to a device that it cannot hear.
Management
Frame Throttle
Interval
Averaging interval for rate limiting management frames from this radio, in seconds. A
management frame throttle interval of 0 seconds disables rate limiting.
Management
Frame Throttle
Limit
Maximum number of management frames that can come in from this radio in each
throttle interval.
Maximum Distance Maximum client distance, in meters. This value is used to derive ACK and CTS timeout
times. A value of 0 specifies default settings for this parameter, where timeouts are
only modified for outdoor mesh radios which use a distance of 16km.
The upper limit for this parameter varies from 24km–58km, depending on the radio’s
band (a/g) and 20/40 MHz mode. Note that if you configure a value above the
supported maximum, the maximum supported value will be used instead. Values
below 600m will use default settings.
RX Sensitivity
Tuning Based
Channel Reuse
In some dense deployments, it is possible for APs to hear other APs on the same
channel. This creates co-channel interference and reduces the overall utilization of
the channel in a given area. Channel reuse enables dynamic control over the receive
(Rx) sensitivity in order to improve spatial reuse of the channel.
This feature is disabled by default. To enable this feature, click the RX Sensitivity
Tuning Based Channel Reuse drop-down list and select either static or
dynamic.To disable this feature, click the RX Sensitivity Tuning Based Channel Reuse
drop-down list and select disable. For details on each of these modes, see Reusing
Channels to Control RX Sensitivity Tuning on page 471.
NOTE: Do not enable the Channel Reuse feature if Non-Wi-Fi Interference Immunity
on page 562 is set to level 3 or higher. A level-3 to level-4 Noise Immunity setting is
not compatible with the Channel Reuse feature. The channel reuse feature applies to
non-DFS channels only. It is internally disabled for DFS channels and is does not affect
DFS radar signature detection.
RX Sensitivity
Threshold
RX sensitivity tuning based channel reuse threshold, in - dBm.
If the Rx Sensitivity Tuning Based Channel reuse feature is set to static mode, this
parameter manually sets the AP’s Rx sensitivity threshold
(in -dBm). The AP will filter out and ignore weak signals that are below the channel
threshold signal strength.
If the value for this parameter is set to zero, the feature will automatically determine
an appropriate threshold.
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