Using The 802.11H Wireless Mode; Enabling Aeroscout™ Engine Support - D-Link DWL-3600AP Administrator's Manual

Unified Access Point Administrator's Guide
Note: After you configure the wireless settings, you must click Apply to apply the changes and to save
the settings. Changing some settings might cause the AP to stop and restart system processes. If this
happens, wireless clients will temporarily lose connectivity. We recommend that you change AP
settings when WLAN traffic is low.
Using the 802.11h Wireless Mode
For 802.11a radios, if the regulatory domain requires radar detection on the channel, the Dynamic Frequency
Selection (DFS) and Transmit Power Control (TPC) features of 802.11h are automatically activated.
There are a number of key points about the IEEE 802.11h standard:
• 802.11h only works for the 802.11a band. It is not required for 802.11b or 802.11g.
• If you are operating in an 802.11h enabled domain, the AP attempts to use the channel you assign. If the
channel has been blocked by a previous radar detection, or if the AP detects a radar on the channel, then
the AP automatically selects a different channel.
• When 802.11h is enabled, the AP will not be operational in the 5GHz band for at least 60 seconds due to
radar scanning.
• Setting up WDS links may be difficult when 802.11h is operational. This is because the operating channels
of the two APs on the WDS link may keep changing depending on channel usage and radar interference.
WDS will only work if both the APs operate on the same channel. For more information on WDS, see
"Configuring Load Balancing" on page 88.
Enabling AeroScout™ Engine Support
The AeroScout Engine (AE) is a software platform produced by AeroScout Inc. for location‐based services. The
AE can determine the physical location of 802.11‐capable AeroScout devices. The AE communicates with APs
that have the AE protocol enabled in order to collect information about the RF devices detected by the APs.
The DWS‐4000 Series switch supports only direct communication between the AE and the APs. When
operating in managed mode, the AE is configured with the IP address of the managed access points from which
it collects information. The DWS‐4000 Series switch does not communicate with the AE.
AeroScout tags operate only in 802.11b/g mode. Therefore, network administrators who use the AeroScout
tags must configure at least one radio on APs that are expected to detect tags in either 802.11b/g or
802.11b/g/n mode. The radios configured in 2.4 GHz IEEE 802.11n mode or any of the 5 GHz modes cannot
detect AeroScout tags.
D-Link
November 2011
Wireless Settings
Unified Access Point Administrator's Guide
Page 57