User's Manual

441 | Adaptive Radio Management (ARM) Dell Networking W-Series ArubaOS 6.4.x| User Guide
Setting Description
Error Rate
Threshold
The minimum percentage of PHY errors and MAC errors in the channel that will trigger a
channel change.
Default: 50%
Error Rate
Wait Time
Minimum time in seconds the error rate has to exceed the Error Rate Threshold before it
triggers a channel change.
Default: 30 seconds
Channel Qual-
ity Aware
Arm
Select this checkbox to allow ARM to initiate a channel change due to low quality on the
current channel.
Channel
Quality
Threshold
Channel quality percentage below which ARM initiates a channel change.
Range: 0-100%
Default: 70%.
Channel
Quality Wait
Time
If channel quality is below the specified channel quality threshold for this wait time period,
ARM initiates a channel change.
Range:1-3600 seconds
Default: 120 seconds.
Minimum
Scan Time
Minimum number of times a channel must be scanned before it is considered for
assignment. Range: 0–2,147,483,647 scans. It is recommended to use a Minimum Scan
Time between 1–20 scans.
Default: 8 scans
Load Aware
Scan
Threshold
Load aware ARM preserves network resources during periods of high traffic by temporarily
halting ARM scanning if the load for the AP gets too high.
The Load Aware Scan Threshold is the traffic throughput level an AP must reach before it
stops scanning.
Range: 0–20,000,000 bytes/second. (Specify 0 to disable this feature.)
Default: 1250000 Bps
Mode Aware
ARM
If enabled, ARM will turn APs into Air Monitors (AMs) if it detects higher coverage levels than
necessary. This helps avoid higher levels of interference on the WLAN. Although this setting
is disabled by default, you may want to enable this feature if your APs are deployed in close
proximity (less than 60 feet apart).
Mode aware ARM turns Air Monitors back into APs when they detect gaps in coverage. Note
that an Air Monitor will not turn back into an AP if it detects client traffic (or client traffic
increases), but will change to an AP only if it detects coverage holes.
Default: disabled
Scan Mode By default, 802.11n-capable APs scan channels within all regulatory domains. To limit the AP
scans to just the regulatory domain for that AP, click the Scan Mode drop-down list and
select reg-domain.
NOTE: This setting does not apply to APs that do not support 802.11n; these APs will scan
their regulatory domain only.
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.
Table 82: ARM Profile Configuration Parameters