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AP Commands 315

Nortel WLAN—Security Switch 2300 Series Command Line Reference

set radio-profile wmm-powersave

Enables Unscheduled Automatic Powersave Delivery (U-APSD) on AP radios managed by the radio profile.

U-APSD enables WMM clients that use powersave mode to more efficiently request buffered unicast packets

from AP radios.

When U-APSD is enabled, a client can retrieve buffered unicast packets for a traffic priority enabled for U-

APSD by sending a QoS data or QoS-Null frame for that priority. U-APSD can be enabled for individual

traffic priorities, for individual clients, based on the client’s request. A client enables U-APSD for a traffic

priority by indicating this preference when (re)associating with the AP radio.

A client can but is not required to request U-APSD for all four traffic priorities. The AP radio still buffers

packets for all traffic priorities even if the client does not request U-APSD for them. However, to retrieve

buffered packets for priorities that are not using U-APSD, a client must send a separate PSpoll for each

buffered packet.

Syntax

set radio-profile name wmm-powersave {enable | disable}

Defaults

U-APSD is disabled by default.

Access

Enabled.

History

Introduced in WSS Software Version 5.0.

Usage

U-APSD is supported only for QoS mode WMM. If WMM is not enabled on the radio

profile, use the set radio-profile qos-mode command to enable it.

Examples

The following command enables U-APSD on radio profile rp1:

WSS# set radio-profile rp1 wmm-powersave enable

success: change accepted.