User's Manual

439 | Adaptive Radio Management (ARM) Dell Networking W-Series ArubaOS 6.4.x| User Guide
Setting Description
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 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.
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.
Range: 0–2,147,483,647 seconds.
Default: 10 seconds
Active Scan When you enable Active Scan, 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
ARM Over the
Air Updates
The ARM Over the Air Updates option allows an AP to get information about its
RFenvironment from its neighbors, even the AP cannot scan. If this feature is enabled, when
an AP on the network scans a foreign (non-home) channel, it sends other APs an Over-the-
Air (OTA) update in an 802.11 management frame that contains information about the
scanning AP's home channel, the current transmission EIRP value of its home channel, and
one-hop neighbors seen by that AP.
Default: enabled
Scanning The Scanning checkbox enables or disables AP scanning across multiple channels.
Disabling this option also disables the following scanning features:
l Multi Band Scan
l Rogue AP Aware
l Voip Aware Scan
l Power Save Scan
Do not disable Scanning unless you want to disable ARM and manually configure AP channel
and transmission power.
Default: enabled
Table 82: ARM Profile Configuration Parameters