Consolidated Platform Configuration Guide, Cisco IOS XE 3.3SE (Catalyst 3850 Switches)
Configuring Probe Request Forwarding
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Configuring Probe Request Forwarding

Configuring Probe Request Forwarding

Finding Feature Information

Your software release may not support all of the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http:/​/​www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

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 switchcontroller 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 switchcontroller. The switchcontroller can use the information from unacknowledged probe requests to improve the location accuracy.

How to Configure Probe Request Forwarding (CLI)


Note


The procedure to perform this task using the switchcontroller GUI is not currently available.


SUMMARY STEPS

    1.    configure terminal

    2.    wireless probe filter

    3.    wireless probe filter num_probes interval

    4.    end

    5.    show wireless probe


DETAILED STEPS
     Command or ActionPurpose
    Step 1 configure terminal


    Example:
    Switch# configure terminal
     

    Enters global configuration mode.

     
    Step 2wireless probe filter


    Example:
    Switch(config)# wireless probe filter
     

    Enables or disables the filtering of probe requests forwarded from an access point to the switchcontroller.

    Note   

    If you enable probe filtering, the default filter setting, the access point forwards only acknowledged probe requests to the switchcontroller. If you disable probe filtering, the access point forwards both acknowledged and unacknowledged probe requests to the switchcontroller.

     
    Step 3wireless probe filter num_probes interval


    Example:
    Switch(config)# wireless probe filter 5 5
     
    Limits the number of probe requests sent to the switchcontroller 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 switchcontroller 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.

     
    Step 4end


    Example:
    Switch(config)# end
     

    Returns to privileged EXEC mode. Alternatively, you can also press Ctrl-Z to exit global configuration mode.

     
    Step 5show wireless probe


    Example:
    Switch# show wireless probe
     

    Displays the advanced probe request configuration.