AP Management
D-Link Unified Wired and Wireless Access System
Oct. 2015 Page 577
D-Link UWS User Manual
The automatic channel selection algorithm does not affect APs that meet any of the following conditions:
• The channel is statically assigned to the AP in the RADIUS or local AP database.
• The channel has been statically assigned to the AP from the WLAN > Administration > AP Management >
Advanced Settings page.
• The AP uses a profile that has the Automatic Channel field disabled (Radio Configuration setting).
The RF transmission power level affects how far an AP broadcasts its signal. If the power level is too low,
wireless clients will not detect the signal or experience poor WLAN performance. If the power level is too high,
the RF signal might interfere with other APs within range or broadcast the signal beyond the desired physical
boundaries, which can create a security risk.
The Auto Channel Configuration (ACA) uses the neighbor AP signal strength readings to decide when to change
channels. You can configure the following parameters that affect the ACA algorithm operation. The 2.4GHz and
5GHz bands have their own set of configuration parameters. The channel plan runs independently in each
band. To configure Channel Plan and Power Adjustment settings, click AP Management > RF Management.
Figure 369: RF Channel Plan and Power Configuration
The table below describes the RF Channel Plan and Power Adjustment fields you can configure.
Note: If the AP is not assigned a fixed channel or is not assigned a specific channel by the automatic
channel selection algorithm, the AP channel selection mode is set to best. This means that the AP
selects the best channel whenever the radio restarts or if the AP detects a radar signal.
Note: When the AP changes its channel, all associated wireless clients temporarily lose their
connection to the AP and must re-associate. The re-association can take several seconds, which can
affect time-sensitive traffic such as voice and video.
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