Menus and Parameters

4.2.6.2.15 Lost Beacons Transmission Watchdog Threshold (AU only)

When it is unable to send beacon frames for a predetermined period of time, such as in the case of interferences, the AU resets itself. The Lost Beacons Transmission Threshold parameter represents the number of consecutive lost beacons after which the unit will reset itself.

The range for this parameter is 100 – 1000 or 0. When the parameter is set to 0, this feature is disabled, i.e. internal refresh will never be performed.

The default value is 218.

4.2.6.2.16 Disassociate (AU only)

The Disassociate feature enables disassociating all SUs associated with the AU or a selected SU. This feature is useful during configuration changes, enabling to force the SU(s) to re-initiate the association process, including the search for the best AU (or a preferred AU) using the Best AU process, without performing a full reset.

The Disassociate submenu includes two options:

„Disassociate All SUs

„Disassociate SU By MAC Address: to disassociate a selected SU

4.2.6.2.17Noise Immunity Control

Noise Immunity Control parameters are available only in units with HW Revision C and higher, except to the Pulse Detection Sensitivity parameter that is available also in units with HW Revision B.

The Adaptive Noise Immunity (ANI) mechanism is designed to reduce the wireless physical layer errors and by that enhance the processing power of the unit, delivering higher packet processing efficiency.

This ANI mechanism is triggered by the rate of detected Physical Errors and it is modifying different thresholds affecting the immunity to specific interference types.

This feature, active by default, exists in all units with HW revision C and higher running SW version 3.0 and higher. Starting in SW version 4.0, the processing power of the system has been increased dramatically. When using version 4.0 the units are capable to process more packets per seconds, including physical error packets. As a result, the ANI mechanism (triggered by the number of received error packets) may not function properly in certain scenarios, resulting in link performances that are far below the expectations. The option of manually controlling the various parameters used by the ANI mechanism enables to

Operation and Administration

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Alvarion SW VERSION 5.1 Lost Beacons Transmission Watchdog Threshold AU only, Disassociate AU only, Noise Immunity Control