Information About Configuring Probe Request Forwarding
Probe requests are 802.11 management frames that are sent by clients to request information about the capabilities of Service Set Identifiers (SSIDs). By default, access points forward acknowledged probe requests to the controller for processing. Acknowledged probe requests are probe requests for SSIDs that are supported by the access point. If desired, you can configure access points to forward both acknowledged and unacknowledged probe requests to the controller. The controller can use the information from unacknowledged probe requests to improve the location accuracy.
How to Configure Probe Request Forwarding (CLI)
The procedure to perform this task using the controller GUI is not currently available.
Command or Action
Controller# configure terminal
Enters global configuration mode.
Controller(config)# wireless probe filter
Enables or disables the filtering of probe requests forwarded from an access point to the controller.
If you enable probe filtering, the default filter setting, the access point forwards only acknowledged probe requests to the controller. If you disable probe filtering, the access point forwards both acknowledged and unacknowledged probe requests to the controller.
Controller(config)# wireless probe filter 5 5
Limits the number of probe requests sent to the controller per client per access point radio in a given interval. You must specify the following arguments with this command:
num_probes—Number of probe requests forwarded to the controller per client per access point radio in a given interval. The range is from 1 to 100.
interval—Probe limit interval in milliseconds. The range is from 100 to 10000.
Returns to privileged EXEC mode. Alternatively, you can also press Ctrl-Z to exit global configuration mode.
Controller# show wireless probe
Displays the advanced probe request configuration.