Reference Guide

464 | rf arm-profile Dell PowerConnect W-Series ArubaOS 6.1 CLI | Reference Guide
Usage Guidelines
Adaptive Radio Management (ARM) is a radio frequency (RF) resource allocation algorithm that allows each AP
to determine the optimum channel selection and transmit power setting to minimize interference and maximize
coverage and throughput. This command configures an ARM profile that you apply to a radio profile for the 5
GHz or 2.4 GHz frequency band (see “rf dot11a-radio-profile” on page 466 or “rf dot11g-radio-profile” on
page 472).
If you were running an earlier version of ArubaOS with ARM disabled, ARM remains disabled when you upgrade
to the current release.
Using Adaptive Radio Management (ARM) in a Remote Network
Starting in ArubaOS 3.4.1.x-rn 4.0, the ARM feature can be used by remote APs in bridge mode. Earlier versions
of ArubaOS supported ARM on campus APs only.
Using Adaptive Radio Management (ARM) in a Mesh Network
When a mesh portal operates on a mesh network, the mesh portal determines the channel used by the mesh
feature. When a mesh point locates an upstream mesh portal, it will scan the regulatory domain channels list to
determine the channel assigned to it, for a mesh point always uses the channel selected by its mesh portal.
However, if a mesh portal uses an ARM profile enabled with a single-band or multi-band channel/power
assignment and the scanning feature, the mesh portal will scan the configured channel lists and the ARM
algorithm will assign the proper channel to the mesh portal.
If you are using ARM in your network, is important to note that mesh points, unlike mesh portals, do not scan
channels. This means that once a mesh point has selected a mesh portal or an upstream mesh point, it will tune
scan-time The amount of time, in milliseconds, an AP will drift out of
the current channel to scan another channel.
50-2,147,
483,647
Recommended
Values: 50-200
110
milliseconds
scanning The Scanning checkbox enables or disables AP scanning
across multiple channels. Disabling this option also
disables the following scanning features:
 Multi Band Scan
 Rogue AP Aware
 Voip Aware Scan
 Power Save Scan
Do not disable Scanning unless you want to disable ARM
and manually configure AP channel and transmission
power.
— enabled
video-aware-scan As long as there is at least one video frame every 100 mSec
the AP will reject an ARM scanning request. Note that for
each radio interface, video frames must be defined in one
of two ways:
 Classify the frame as video traffic via a session ACL.
 Enable WMM on the WLAN’s SSID profile and define a
specific DSCP value as a video stream. Next, create a
session ACL to tag the video traffic with the that DSCP
value.
— enabled
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
parameter 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.
— disabled
Parameter Description Range Default