USRobotics Instant802 APSDK manual Set wme-queue wlan0 with queue QueueName to aifs AIFSValue

Professional Access Point

Administrator Guide

Set AIFS on the Client Station

To set the AIFS on station-to-access-point traffic:

set wme-queue wlan0 with queue Queue_Name to aifs AIFS_Value

Where Queue_Name is the queue on the station to which you want the setting to apply and AIFS_Value is the wait time value you want to specify for AIFS.

For example, this command sets the AIFS wait time on the station Voice queue (vo) to 14 milliseconds.

USR5453-AP#set wme-queue wlan0 with queue vo to aifs 14

View the results of this configuration update (bold in the command output highlights the modified value):

USR5453-AP#get wme-queue

name queue aifs cwmin cwmax txop-limit

--------------------------------------------

wlan0	vo	14	3	7	47
wlan0	vi	2	7	15	94
wlan0	be	3	15	1023	0
wlan0	bk	7	15	1023	0

Setting Minimum and Maximum Contention Windows (cwmin, cwmax)

The Minimum Contention Window (cwmin) sets the upper limit (in milliseconds) of the range from which the initial random backoff wait time is determined. For more details, see “Random Backoff and Minimum / Maximum Contention Windows” on page 146.)

Valid values for the "cwmin" are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1023. The value for "cwmin" must be lower than the value for "cwmax".

The Maximum Contention Window (cwmax) sets the upper limit (in milliseconds) for the doubling of the random backoff value. This doubling continues until either the data frame is sent or the Maximum Contention Window size is reached. For more details, see “Random Backoff and Minimum / Maximum Contention Windows” on page 146.)

Valid values for the "cwmax" are 1, 3, 7, 15, 31, 63, 127, 255, 511, or 1023. The value for "cwmax" must be higher than the value for "cwmin".

Set cwmin and cwmax on the Access Point

To set the Minimum and Maximum Contention Windows (cwmin, cwmax) on access-point-to-station traffic:

set tx-queue wlan0 with queue Queue_Name to cwmin cwmin_Value cwmax cwmax_Value

Where Queue_Name is the queue on the access point to which you want the setting to apply and

cwmin_Value and cwmax_Value are the values (in milliseconds) you want to specify for contention back-off windows.

For example, this command sets the access point Video queue (data1) cwmin value to 15 and cwmax value to 31.

Class Structure, Commands, and Examples - 242