arm-profile <arm_profile>
and
(host)(config) #rf dot11g-radio-profile <ap_profile>
arm-profile <arm_profile>
Where<ap_profile> is the name of the AP group, and<arm_profile> is the name of the ARM profile you want
to assign to that radio band.
Using Multi-Band ARM for 802.11a /802.11g Traffic
Dell recommendsusing the multi-band ARM as signmentand Mode Aware A RM feature for single-radioAP s in
networks with traffic in the8 02.11a and 802.11g bands. This featureallows a single-radio AP to dynamically change
its radio bands based on current coverage on the configuredband. This feature is enabled via the AP 's ARM profile.
Whenyou first provisiona single-radio AP, it initiallyoperates in the radio band specified i n its AP system profile.
If the AP finds adequate coverage on multiplechannels in its current band of operation, the mode-aware feature
allows theAP t o temporarilyturn itself off andbecome an AP Air Monitor (APM). In AP Monitor mode, the AP
scans allchannels across both bands to verify that each channelmeets or exceeds its required levelof acceptable
radio coverage (as definedby the in the AR Mprofile).
If the AP Monitor detects that a channel on the 802.11g band does not have adequate radio coverage,i t will convert
back to an AP on that 802 .11 channel.If the 8 02.11g band is adequately covered, the AP Monitor will next check
the 802.11a band. If a channelon the 80 2.11a band lacksco verage,the AP Monito rw illconvert back to an AP on
that 802.11a channel.
Enabling Band Steerin g
ARM’s band steering featureencourages dual-bandc apableclients to stayon the 5GHz band on dual-band APs. This
freesup resources on the 2.4GHz band for single band clients like VoIP phones.
Band steering reducesco-channel interference and increases available bandwidth for dual-bandclients, because there
are morec hannelson the 5GHz band than on the 2.4GHz band. Dual-band 802.11n-capable clients may see even
greaterbandwidth improvements, because the band steering feature will automatically select between 40MHz or
20MHz channelsi n 802.11n networks. This feature is disabled by default, and must be enabledin a VirtualAP
profile.
The bandsteering feature supports both campus APs and remote APs that have a virtualAP profileset to tunnel,
split-tunnelor bridge forwarding mode. Note, however, that if a c ampuso r remote AP has virtual AP profiles
configuredin bridge or split-tunnel forwarding mode

but no virtual AP in tunnel mode

, those APs will gather
information about 5G-capable clients independentlyand will not exchange this information with o therA Ps that also
have bridgeo r split-tunnelvirtual APs only.The band steering feature will not proactively disconnect clients that are
alreadyassoci ated with a radio. Allband steering occurs when a client is trying to associate to anew AP radio.
NOTE:Best practices is to use either the Band Steering or the Spectrum Load Balancing featureto balance cl ient load across
channels, but not both at the same time.

Steering Mod es

Band steeringsupports t hefollowing three different band steering modes.
lPrefer-5GHz

(Default)

: If you configurethe AP touse prefer-5G Hz bandst eeringmode, the A P will not respond
to 2.4 Ghz probe requests from a client if all the following conditions are met.
DellPowerConnect W- Series ArubaOS 6.2 | UserGuide AdaptiveRadio Management (ARM) | 356