Release Notes

Parameter Description Range Default
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:
l Classify the frame as video traffic via
a session ACL.
l 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
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 664 or rf dot11g-radio-profile
on page 673).
Channel Quality
Hybrid APs and Spectrum Monitors determine channel quality by measuring channel noise, non-Wi-Fi
(interferer) utilization and duty-cycles, and certain types of Wi-Fi retries. Regular APs using the ARM feature
derive channel quality values by measuring the noise floor for that channel.
Client Match
the ARM client match feature continually monitors a client's RF neighborhood to provide ongoing client
bandsteering and load balancing, and enhanced AP reassignment for roaming mobile clients. This feature is
recommended over the legacy bandsteering and spectrum load balancing features, which, unlike client match,
do not trigger AP changes for clients already associated to an AP.
Legacy 802.11a/b/g devices do not support the client match feature. When client match is enabled on 802.11n-
capable devices, the client match feature overrides any settings configured for the legacy bandsteering, station
handoff assist or load balancing features. 802.11ac-capable devices do not support the legacy bandsteering, station
hand off or load balancing settings, so these APs must be managed on using client match.
When this feature is enabled on an AP, that AP is responsible for measuring the RF health of its associated
clients. The APreceives and collects information about clients in its neighborhood, and periodically sends this
information to the controller. The controller aggregates information it receives from all APs using client match,
and maintains information for all associated clients in a database. The controller shares this database with the
APs (for their associated clients) and the APs use the information to compute the client-based RF
neighborhood and determine which APs should be considered candidate APs for each client. When the
Dell Networking W-Series ArubaOS 6.4.x | Reference Guide rf arm-profile | 660