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WS 2000 Wireless Switch System Reference Guide5-26
The Rogue AP Detection screen allows the administrator to determine how thoroughly the switch will search for rogue APs
as well as list the approved APs.
Setting Up the Detection Method
The WS 2000 Wireless Switch provides three methods for detecting rogue Access Points (APs). Use the top part of the Rogue
AP Detection screen to set the method or methods that the switch will use to detect rogue APs.
1. Check the RF Scan by MU box if you want the switch to work with mobile units (MUs) to detect a rogue AP.
With this option selected, each MU reports whether it supports rogue AP detection mechanisms. If so, the switch sends
WNMP requests, at regular intervals, to the MU to get a list of APs. The MU scans all the channels for APs in the vicinity.
The MU then prepares a list of APs (BSSIDs) and sends it back to the switch using WNMP response message. The
switch processes this information.
2. Check the RF Scan by AP box if you want the switch to work with the APs to detect a rogue AP. By default, this method
is selected.
With this option enabled, the switch sends a WISP configuration message to each adopted AP that indicates that rogue
AP detection is needed. Each AP listens for beacons in its present channel and passes the beacons to the switch without
modification. The switch then processes the beacons to determine whether any of them are rogues. This method is less
disruptive than the RF Scan by MU mode.
3. Check the RF Scan by Detector AP box if you have set up a detector AP on the LAN and want the switch to work with
that AP to detect rogue APs. To set an AP as a detector AP, go to the screen for the adopted AP under Access Ports in
the navigation menu and check the appropriate box.
Note that only some switches have the capability of being a Detector AP, including Symbol AP 100, AP 200, and AP 300
Access Ports.
4. In the Scan Interval field, enter a time interval (in minutes) between detection RF scans. Do this for each of the
selected detection methods. By default, these scans are set at one hour intervals.