Reference Guide
Dell PowerConnect ArubaOS 6.0 Command Line Interface | Reference Guide show ap config | 548
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.
Free Channel Index The current free channel index value. 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.
Backoff Time After an AP changes channel or power settings, it waits for this backoff time interval
before it asks for a new channel/power setting.
Error Rate Threshold The minimum percentage of PHY errors and MAC errors in the channel that will trigger a
channel change.
Error Rate Wait Time Minimum time in seconds the error rate on the AP has to exceed its defined error rate
threshold before it triggers a channel change.
Noise Threshold Maximum level of noise in a channel that triggers a channel change.
Noise Wait Time Minimum time in seconds the noise level has to exceed the Noise Threshold before it
triggers a channel change on the AP.
Minimum Scan Time Minimum number of times a channel must be scanned before it is considered for
assignment. Best practices are to configure a Minimum Scan Time between 1-20 scans.
Load aware Scan Threshold The Load Aware Scan Threshold is the traffic throughput level an AP must reach before it
stops scanning. 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.
Mode Aware Arm Shows if the mode-aware ARM feature has been enabled or disabled for this AP. If
enabled, ARM will turn the AP into an 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 (e.g. less than 60 feet apart).
40 MHz intolerance The specified setting allows ARM to determine if 40 MHz mode of operation is allowed on
the 5 GHz or 2.4 GHz frequency band only, on both frequency bands, or on neither
frequency band.
Honor 40 MHz intolerance Shows if 40 MHz intolerance is enabled or disabled. If enabled, the radio will stop using
the 40 MHz channels if the 40 MHz intolerance indication is received from another AP or
station.
Legacy station workaround Shows if interoperability for misbehaving legacy stations is enabled or disabled.
ESSID Name that uniquely identifies the Extended Service Set Identifier (SSID).
Encryption Encryption type used on this AP.
DTIM Interval Shows the interval, in milliseconds, between the sending of Delivery Traffic Indication
Messages (DTIMs) in the beacon. This is the maximum number of beacon cycles before
unacknowledged network broadcasts are flushed.
Basic Rates Lists supported 802.11a rates, in Mbps, that are advertised in beacon frames and probe
responses from this AP.
Transmit Rates Lists 802.11a rates at which the AP is allowed to send data. The actual transmit rate
depends on what the client is able to handle, based on information sent at the time of
association and on the current error/loss rate of the client.
Station Ageout Time T
ime, in seconds, that a client is allowed to remain idle before being aged out.
Max Transmit Attempts Maximum number of retries allowed for the AP to send a frame
Parameter Description










