3Com WX4400 Reference Manual page 275

Although the interfering device is not connected to your network,
the device might be causing RF interference with MAP radios.
Rogue—Radios use countermeasures against devices classified by
MSS as rogues, but do not use countermeasures against devices
classified by MSS as interfering devices.
CAUTION: Countermeasures affect wireless service on a radio. When a
MAP radio is sending countermeasures, the radio is disabled for use by
network traffic, until the radio finishes sending the countermeasures.
Configured—Causes radios to attack only devices specified in the
attack list on the WX switch (on-demand countermeasures). When
this option is used, devices found to be rogues by other means,
such as policy violations or by determining that the device is
providing connectivity to the wired network, are not attacked.
Enable Active Scan—Sends probe any requests (probe requests with a
null SSID name), to solicit probe responses from other access points.
Radios also passively scan by listening for beacons and probe
responses. When active scan is disabled, radios perform passive
scanning only.
Enable RFID—Enables AeroScout support. (For more information, see
the "Configuring MAPs To Be AeroScout Listeners" chapter in the
Wireless LAN Switch and Controller Configuration
Enable U-APSD—Enables Unscheduled Automatic Powersave Delivery
(U-APSD) on MAP radios managed by the radio profile. U-APSD
enables WMM clients that use powersave mode to more efficiently
request buffered unicast packets from MAP radios. (For more
information, see the "U-APSD Support" section in the "Configuring
Quality of Service" chapter of the
Configuration Guide.)
802.11 Attributes Tab
The 802.11 Attributes tab lists the settings of the following options:
Beacon Interval—Interval at which the MAP advertises its SSIDs. You
can specify from 25 to 8191 milliseconds (ms). The default is 100 ms.
DTIM Period—Number of beacons (1 to 31) the MAP transmits before
transmitting the multicast and broadcast frames stored in its buffers.
The default is 1.
Viewing and Configuring Radio Profiles
Wireless LAN Switch and Controller
275
Guide.)