3Com WX4400 3CRWX440095A WX1200, 3CRWXR10095A, 3CRWX120695A WXR100 manual Attributes Tab

266CHAPTER 7: CONFIGURING WIRELESS PARAMETERS

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.

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.

„Fragment Threshold—Frame length (256 to 2346 bytes) at which the long-retry-count is applicable instead of the short-retry-count. The default is 2,346 bytes.

„Max. Tx MSDU Lifetime—Maximum amount of time, from 500 ms to 250,000 ms (250 seconds), the MAP can hold an outbound frame in buffer storage. The default value is 2,000 ms (2 seconds).

„Max. Rx MSDU Lifetime—Maximum amount of time, from 500 ms to 250,000 ms (250 seconds), the MAP can hold an inbound frame in buffer storage. The default is 2000 ms (2 seconds).

„RTS Threshold—Minimum length (256 to 3000 bytes) a frame can be for the MAP to use the Request-To-Send/Clear-To-Send (RTS/CTS) method to send the frame. Frames smaller than the RTS threshold are not sent using the RTS/CTS method. The default is 2346 bytes.

„Enable Long Preambles—Enables advertisement of long preambles for 802.11b/g radios. This option is enabled by default. This option applies only to 802.11b/g radios.