Users Guide

Table Of Contents
Dell PowerConnect W-Series ArubaOS 6.1 | User Guide Adaptive Radio Management (ARM) | 177
Transmission Power Levels Change Too Often
Frequent changes in transmission power levels can indicate an unstable RF environment, but can also reflect
incorrect ARM or AP settings. To slow down the frequency at which the APs change their transmit power, set the
ARM Backoff Time to a higher value. If APs are using external antennas, check the Configuration > Wireless >
AP Installation > Provisioning window to make sure the APs are statically configured for the correct dBi gain,
antenna type, and antenna number. If only one external antenna is connected to its radio, you must select either
antenna number 1 or 2.
APs Detect Errors but Do Not Change Channels
First, ensure that ARM error checking is not disabled. The ARM Error Rate Threshold should be set to a
percentage higher than zero. The suggested configuration value for the ARM Error Rate Threshold is 30–50%.
APs Don’t Change Channels Due to Channel Noise
APs will only change channels due to interference if ARM noise checking is enabled. Check to verify that the
ARM Noise Threshold is set to a value higher than 0 dBm. The suggested setting for this threshold is 75 dBm.