D-Link DWC-1000 User Manual page 77

Wireless Controller
User Manual
Specify a DTIM period within the given range (1 –255). The measurement is
in beacons. For example, if you set this field to 1, clients will check for
buffered data on the AP at every beacon. If you set this field to 10, clients
will check on every 10th beacon.
Beacon Interval: Beacon frames are transmitted by an access point at regular
intervals to announce the existence of the wireless network. The default
behavior is to send a beacon frame once every 100 milliseconds (or 10 pe r
second). The Beacon Interval value is set in milliseconds. Enter a value from
20 to 2000.
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 op eration. 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
autochannel selection algorithm to allow the DWC-1000 controller to adjust
the channel on APs as WLAN conditions change.
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: The automatic power algorithm will not reduce the power
below the number you set in the initial power field. By default, the power
level is 100%. Therefore, even if you enable the automatic power, the power
of the RF signal will not decrease. The power level is a percentage of the
maximum transmission power for the RF signal.
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