Users Guide

519 | Adaptive Radio Management Dell Networking W-Series ArubaOS 6.4.x| User Guide
Setting Description
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
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
VoIP Aware
Scan
Dell’s VoIP Call Admission Control (CAC) prevents any single AP from becoming congested
with voice calls. When you enable CAC, you should also enable VoIP Aware Scan in the
ARM profile, so the AP will not attempt to scan a different channel if one of its clients has
an active VoIP call. This option requires that Scanning is also enabled.
Default: disabled
Table 103: ARM Profile Configuration Parameters