Users Guide

234 | Secure Enterprise Mesh Dell PowerConnect W-Series ArubaOS 6.1 | User Guide
Spectrum load balancing
mode
The spectrum load balancing mode allows you to allows control over how to balance clients. Select
one of the following options:
 channel: Channel-based load-balancing balances clients across channels. This is the default
load-balancing mode
 radio: Radio-based load-balancing balances clients across APs.
Spectrum Load Balancing
Interval
Specify how often spectrum load balancing calculations are made (in seconds). The supported
range is 1-2147483647 seconds and the default value is 30 seconds.
Spectrum Load Balancing
threshold
If the spectrum load balancing feature is enabled, this parameter controls the percentage
difference between number of clients on a channel that triggers load balancing. The default value is
20%, meaning that spectrum load balancing is activated when there are 20% more clients on one
channel than on another channel used by the AP radio.
Advertised Regulatory
Max EIRP
Work around a known issue on Cisco 7921G telephones by specifying a cap for a radio’s maximum
equivalent isotropic radiated power (EIRP). When you enable this parameter, even if the regulatory
approved maximum for a given channel is higher than this EIRP cap, the AP radio using this profile
will advertise only this capped maximum EIRP in its radio beacons.
The supported range is 1-31dBm.
Spectrum Load Balancing
Domain
Enter a spectrum load balancing domain name to manually create RF neighborhoods.
Use this option to create RF neighborhood information for networks that have disabled Adaptive
Radio Management (ARM) scanning and channel assignment.
 If spectrum load balancing is enabled in a 802.11a or 802.11g radio profile but the spectrum load
balancing domain is not defined, ArubaOS uses the ARM feature to calculate RF neighborhoods.
 If spectrum load balancing is enabled in a 802.11a or 802.11g radio profile and a spectrum load
balancing domain is also defined, AP radios belonging to the same spectrum load balancing
domain will be considered part of the same RF neighborhood for load balancing, and will not
recognize RF neighborhoods defined by the ARM feature.
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 “RX Sensitivity Tuning Based Channel Reuse”.
NOTE: Do not enable the Channel Reuse feature if Non 802.11 Interference Immunity 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.
Table 43 802.11a/802.11g RF Management Configuration Parameters (Continued)
Parameter Description