351| Adaptive Radio Mana gement (ARM ) DellPowerConnect W- Series ArubaOS 6.2 | User Guide
Setting Description
VoIPAware
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 wil l
notattempt to scan a different channel i f one of its clients has an active VoIP call. Thisoption requi res
thatScanning is al so enabled.
Default:disabled
Power Save
AwareS can
Ifenabled, theAP will notscan a different channel i f it has one or more clients that is in powersave
mode.
Default:disabled
Video Aware
Scan
Aslong as there is at least one video frame every 100mSectheAP w ill reject an ARM scanning request.
Notethat for each radio interface, video frames must be defined in one of two ways:
lClassifythe frame as video traffic via a session ACL.
lEnable WMM on the WLAN’sS SIDprofil e and define a specific DSCP value as a video stream. Next,
createa session ACL to tag the video trafficw ith thethat DSCP value.
Minimum Scan
Time
Minimum number of times a channel must be scanned before it is considered for assignment. The
supportedrange for this setting is 0–2,147,483,647scans. Dell recommendsa Minimum Scan Time
between1–20 scans.
Default:8 scans
ScanMode Bydefault, 802.11n-capable APs scan channels within all regulatory domains. To lim it theAP scans to just
theregulatory domain for that AP, click the Scan Mode drop-down listand select reg-domai n.
NOTE:Thi s settingdoes not appl y to APs thatdo not support 802.11n; these APs will scan their regulatory
domain only.
Advanced Config uration Sett ings
Assignment Activatesone of four ARM channel/power assignment modes.
ldisable: Disables ARM calibration and revertsAPs back to default channel and power settings
specifiedby the AP’s radio profile
lmaintain: APs maintain their current channel and power settings. This setting can be usedto
maintain AP channel and power levels after ARM has initially selected the bestsettings.
lmulti-band: For single-radio APs, this value com putesARM assignments for both 5 GHZ (802.11a)and
2.4GHZ (802.11b/g)frequency bands.
lsingle-band: For dual-radio APs, this value enables APs tochange transmit power and channel s
within their same frequencyband, and to adapt to changing channel conditions.
Default:single-band
Allowed bands
for40MHz
channels
Thespecified setting allow sARM to determine i f40 MHz mode of operation is allow ed on the5 GHz or 2.4
GHzfrequency band only, on both frequency bands, or on neither frequency band.
Client Aware Ifthe Client Awar e option is enabled, the AP does not change channels if there is an activecl ient
associatedto that AP. (Activity is defined by the sta-inactivity-time parameter in the IDS general profile.
Bydefault, a client is considered active if it has sent or received traffic within the last 60seconds.)
IfClient Awar e is disabled, the AP may change to a more optimal channel, but this change may also
disruptcurrent cli ent traffic.
Default:enabled
MaxTx EIRP Maximumeffective isotropic radiated power (EIRP) from 3 to 33 dBm i n 3 dBm increments. You may also
specifya special value of 127dBm for regulatory maximum. Higher power level settings may be
constrainedby local regul atoryrequi rements and AP capabilities. In the event that an AP is configured
fora Max Tx EIRP setting it cannot support, this value will be reduced to the highest supported power
setting.
Default:127 dBm
NOTE:Pow er settings will not change if the Assignment option is set to disabled or maintain.