Radio Resource Management (802.11K); Beacon Report Requests And Probe Responses; Configuring A Wlan Ssid For 802.11K Support - Aruba IAP-335 User Manual

Radio Resource Management (802.11k)

The 802.11k standard provides mechanisms for IAPs and clients to dynamically measure the available radio
resources and enables stations to query and manage their radio resources. In an 802.11k-enabled network,
IAPs and clients can share radio and link measurement information, neighbor reports, and beacon reports with
each other. This allows the WLAN network infrastructural elements and clients to assess resources and make
optimal mobility decisions to ensure Quality of Service (QoS) and seamless continuity.
Instant supports the following radio resource management information elements with 802.11k support
enabled:
Power Constraint IE—The power constraint element contains the information necessary to allow a client to
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determine the local maximum transmit power in the current channel.
AP Channel Report IE—The IAP channel report element contains a list of channels in a regulatory class where
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a client is likely to find an IAP, including the IAP transmitting the IAP channel report.
Radio Resource Management (RRM) Enabled Capabilities IE—The RRM-enabled capabilities element signals
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support for radio measurements in a device. The clients use this IE to specify their radio measurement
capabilities.
BSS Load Element—The BSS load element contains information on the density of clients and traffic levels in
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the QBSS.
Transmit Power Control (TPC) Report IE—The TPC IE contains transmit power and link margin information.
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Quiet IE: The Quiet IE defines an interval during which no transmission occurs in the current channel. This
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interval may be used to assist in making channel measurements without interference from other stations in
the BSS.
Extended Capabilities IE—The extended capabilities IE carries information about the capabilities of an IEEE
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802.11 station.

Beacon Report Requests and Probe Responses

The beacon request frame is sent by an IAP to request a client to report the list of beacons detected by the
client on all channels.
The beacon request is sent using the radio measurement request action frame.
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It is sent only to those clients that have the capability to generate beacon reports. The clients indicate their
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capabilities through the RRM enabled capabilities IE sent in the association request frames.
By default, the beacon request frames are sent at a periodicity of 60 seconds.
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Configuring a WLAN SSID for 802.11k Support
You can enable 802.11k support on a WLAN SSID by using the Instant UI or the CLI.
In the Instant UI
1. Navigate to the WLAN wizard (Go to Network > New OR Go to Network > WLAN SSID and click edit).
2. Click the Security tab.
3. Under Fast Roaming, select the 802.11k check box.
4. Click Next and then click Finish.
To allow the IAP and clients to exchange neighbor reports, ensure that Client match is enabled through RF >
ARM > Client match > Enabled in the UI or by executing the client-match command in the arm
configuration subcommand mode.
In the CLI
To enable 802.11k profile:
Aruba Instant 6.5.0.0-4.3.0.0 | User Guide Wireless Network Profiles | 103