Managing Radio Frequency Settings; Configuring Channel Plan And Power Settings - D-Link DWS-3024 User Manual

D-Link Unified Access System User Manual
The APs might take several minutes to reset and re-establish communication with the switch.
While the AP is resetting, the status changes to failed, and then back to managed once the AP
is back online.

Managing Radio Frequency Settings

The radio frequency (RF) broadcast channel defines the portion of the radio spectrum that the
radio on the access point uses for transmitting and receiving. The range of available channels
for an access point is determined by the IEEE 802.11 mode (also referred to as band) of the
access point.
The DWL-3500AP is a single-band system that operates in 802.11g mode, and the DWL-
8500AP is a dual-band system that operates in 802.11a and 802.11g modes. IEEE 802.11b and
802.11g modes (802.11 b/g) operate in the 2.4 GHz RF frequency and support use of channels
1 through 11. IEEE 802.11a mode operates in the 5 GHz frequency and supports a larger set of
non-consecutive channels (36,40,44, 48, 52, 56, 60, 64, 149, 153, 157, 161, 165).
NOTE: The available channels depends on the country in which the APs operate. The
Interference can occur when multiple access points within range of each other are
broadcasting on the same or overlapping channels. The impact of this interference on network
performance can intensify during busy times when a large amount of data and media traffic is
competing for bandwidth. For the "b/g" radio band, the classical set of non-interfering
channels is 1, 6, 11. Channels 1, 4, 8, 11 produce minimal overlap. A similar set of non-
interfering channels is used for the "a" radio band, which includes all channels for that mode
since they are not overlapping.

Configuring Channel Plan and Power Settings

The D-Link Unified Switch software contains a channel plan algorithm that automatically
determines which RF channels each D-Link Access Point should use to minimize RF
interference. When you enable the channel plan algorithm, the switch periodically evaluates
the operational channel on every AP it manages and changes the channel if the current channel
is noisy.
NOTE: The regulation of radio frequencies and channel assignments varies from
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 AP Management >
Advanced page.
• The AP uses a profile that has the Automatic Channel field disabled (Radio Configuration
setting).
110 © 2001- 2008 D-Link Corporation. All Rights Reserved.
channels described in this section are valid for the United States.
country to country. In countries that do not support channels 1, 6, and 11 on
the 802.11b/g radio, the channel plan algorithm is inactive. For the 802.11a
radio, the algorithm is inactive in countries that require 802.11h radar
detection, which includes European countries and Japan.