Basic Setup
D-Link Unified Wired and Wireless Access System
Oct. 2015 Page 553
D-Link UWS User Manual
Automatic Channel The channel defines the portion of the radio spectrum that the radio uses for
transmitting and receiving. The range of channels and the default channel are
determined by the Mode of the radio interface.
When the AP boots, each AP radio scans the RF area for occupied channels and
selects a channel from the available non-interfering or clear channels. However,
channel conditions can change during operation.
Enabling the Automatic Channel makes the radio of APs assigned to this profile
eligible for auto-channel selection. You can automatically or manually run the auto-
channel selection algorithm to allow the DWS-4000 Series switch to adjust the
channel on APs as WLAN conditions change.
By default, the global auto-channel mode is set to manual. To enable the automatic
channel selection mode, go to the WLAN > Administration > AP Management > RF
Management page and select Fixed or Interval for the Channel Plan mode. You can
also run the automatic channel selection algorithm manually from the Manual
Channel Plan page.
Note: If you assign a static channel to a radio of an AP in the Valid AP database or on
the Advanced AP Management page, the AP radio will not participate in the auto-
channel selection.
Automatic Power The power level affects how far an AP broadcasts its RF 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.
Automatic power uses a proprietary algorithm to automatically adjust the RF signal
to broadcast far enough to reach wireless clients, but not so far that it interferes with
RF signals broadcast by other APs. The power level algorithm increases or decreases
the power level in 10% increments based on presence or absence of packet
retransmission errors.
Initial Power Set the initial power level when a AP is managed by a switch. If you disable the
automatic power algorithm, the power of the RF signal will keep on this setting. The
power level is a percentage of the maximum transmission power for the RF signal. By
default, the power level is 100%.
Minimum Power When the automatic power algorithm is enabled, it will not reduce the power below
the number you set in the minimum power field.
The power level is a percentage of the maximum transmission power for the RF
signal. By default, the power level is 20%.
RF Scan Other Channels The access point can perform RF scans to collect information about other wireless
devices within range and then report this information to the DWS-4000 Series
switch.
If you select the Scan Other Channels option, the radio periodically moves away from
the operational channel to scan other channels.
Enabling this mode causes the radio to interrupt user traffic, which may be
noticeable with voice connections.
When the Scan Other Channels option is cleared, the AP scans only the operating
channel.
Table 328: Radio Settings (Cont.)
Field Description
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