User's Manual

Setting Description
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
Power Save
Aware Scan
If enabled, the AP will not scan a different channel if it has one or more clients that is in
power save mode.
Default: disabled
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.
Ideal
Coverage
Index
The Dell coverage index metric is a weighted calculation based on the RF coverage for all
Dell APs and neighboring APs on a specified channel. The Ideal Coverage Index specifies
the ideal coverage that an AP should try to achieve on its channel. The denser the AP
deployment, the lower this value should be.
Range: 2–20
Default: 10
For additional information on how this the Coverage Index is calculated, see ARM Coverage
and Interference Metrics on page 435
Acceptable
Coverage
Index
For multi-band implementations, the Acceptable Coverage Index specifies the minimal
coverage an AP it should achieve on its channel. The denser the AP deployment, the lower
this value should be.
Range: 1–6
Default: 4
Free Channel
Index
The Dell Interference index metric measures interference for a specified channel and its
surrounding channels. This value is calculated and weighted for all APs on those channels
(including 3rd-party APs).
An AP will only move to a new channel if the new channel has a lower interference index
value than the current channel. Free Channel Index specifies the required difference
between the two interference index values before the AP moves to the new channel. The
lower this value, the more likely it is that the AP will move to the new channel. The range of
possible values is 10–40.
Default: 25
For additional information on how this the Channel Index is calculated, see ARM Coverage
and Interference Metrics on page 435.
Backoff Time After an AP changes channel or power settings, it waits for the backoff time interval before it
asks for a new channel/power setting.
Range: 120–3600 seconds.
Default: 240 seconds
Table 82: ARM Profile Configuration Parameters
Dell Networking W-Series ArubaOS 6.4.x | User Guide Adaptive Radio Management (ARM) | 440