Users Guide

Dell PowerConnect W-Series ArubaOS 6.1 | User Guide Adaptive Radio Management (ARM) | 167
Allowed bands
for 40MHz
channels
The specified setting allows ARM to determine if 40 MHz mode of operation is allowed on the 5 GHz or 2.4
GHz frequency band only, on both frequency bands, or on neither frequency band.
Client Aware If the Client Aware option is enabled, the AP does not change channels if there is an active client associated
to that AP. (Activity is defined by the sta-inactivity-time parameter in the IDS general profile. By default, a
client is considered active if it has sent or received traffic within the last 60 seconds.)
If Client Aware is disabled, the AP may change to a more optimal channel, but this change may also disrupt
current client traffic.
Default: enabled
Min Tx EIRP Minimum effective isotropic radiated power (EIRP) from 3 to 33 dBm in 3 dBm increments. You may also
specify a special value of 127 dBm for regulatory maximum to disable power adjustments for environments
such as outdoor mesh links. Note that power settings will not change if the Assignment option is set to
disabled or maintain. Higher power level settings may be constrained by local regulatory requirements and
AP capabilities. In the event that an AP is configured for a Min Tx EIRP setting it cannot support, this value
will be reduced to the highest supported power setting.
Default: 9 dBm
NOTE: Consider configuring a Min Tx Power setting higher than the default value if most of your APs are
placed on the ceiling. APs on a ceiling often have good line of sight between them, which will cause ARM to
decrease their power to prevent interference. However, if the wireless clients down on the floor do not have
such a clear line back to the AP, you could end up with coverage gaps.
Max Tx EIRP Maximum effective isotropic radiated power (EIRP) from 3 to 33 dBm in 3 dBm increments. You may also
specify a special value of 127 dBm for regulatory maximum. Higher power level settings may be constrained
by local regulatory requirements and AP capabilities. In the event that an AP is configured for a Max Tx EIRP
setting it cannot support, this value will be reduced to the highest supported power setting.
Default: 127 dBm
NOTE: Power settings will not change if the Assignment option is set to disabled or maintain.
Multi Band Scan If enabled, single radio channel APs scans for rogue APs across multiple channels. This option requires that
Scanning is also enabled.
(The Multi Band Scan option does not apply to APs that have two radios, as these devices already scan
across multiple channels. If one of these dual-radio devices are assigned an ARM profile with Multi Band
enabled, that device will ignore this setting.)
Default: disabled
Rogue AP Aware If you have enabled both the Scanning and Rogue AP options, Dell APs may change channels to contain off-
channel rogue APs with active clients. This security features allows APs to change channels even if the
Client Aware setting is disabled.
This setting is disabled by default, and should only be enabled in high-security environments where security
requirements are allowed to consume higher levels of network resources. You may prefer to receive Rogue
AP alerts via SNMP traps or syslog events.
Default: disabled
Scan Interval If Scanning is enabled, the Scan Interval defines how often the AP will leave its current channel to scan
other channels in the band.
Off-channel scanning can impact client performance. Typically, the shorter the scan interval, the higher the
impact on performance. If you are deploying a large number of new APs on the network, you may want to
lower the Scan Interval to help those APs find their optimal settings more quickly. Raise the Scan Interval
back to its default setting after the APs are functioning as desired.
The supported range for this setting is 0–2,147,483,647 seconds.
Default: 10 seconds
Active Scan When the Active Scan checkbox is selected, an AP initiates active scanning via probe request. This option
elicits more information from nearby APs, but also creates additional management traffic on the network.
Active Scan is disabled by default, and should not be enabled except under the direct supervision of Dell
Support.
Default: disabled
Table 37 ARM Profile Configuration Parameters (Continued)
Setting Description