3Com WXR100 3CRWXR10095A, WX4400 3CRWX440095A manual Rogue Detection and Countermeasures

572CHAPTER 26: ROGUE DETECTION AND COUNTERMEASURES

When a MAP radio detects radar on a channel, the radio switches to another channel and does not attempt to use the channel where the radar was detected for 30 minutes. MSS also generates a message.

The RF Auto-tuning feature must be enabled. Otherwise MSS cannot change the channel.

Countermeasures You can enable MSS to use countermeasures against rogues. Countermeasures consist of packets that interfere with a client’s ability to use the rogue.

Countermeasures are disabled by default. You can enable them on an individual radio-profile basis. When you enable them, all devices of interest that are not in the known devices list become viable targets for countermeasures. Countermeasures can be enabled against all rogue and interfering devices, against rogue devices only, or against devices explicitly configured in the WX switch’s attack list. The Mobility Domain’s seed switch automatically selects individual radios to send the countermeasure packets.

Mobility Domain RF Detection requires the Mobility Domain to be completely up. If a Requirement Mobility Domain is not fully operational (not all members are up), no new

RF Detection data is processed. Existing RF Detection information ages out normally. Processing of RF Detection data is resumed only when all members of the Mobility Domain are up. If a seed switch in the Mobility Domain cannot resume full operation, you can restore the Mobility Domain to full operation, and therefore resume RF Detection data processing, by removing the inoperative switch from the member list on the seed.