Extreme Networks Summit WM User Manual page 209

uplink traffic. WMM is part of the 802.11e standard for QoS. If selected, the Turbo Voice and the
Advanced Wireless QoS options are displayed.
802.11e - Select to enable the AP to accept WMM client associations, and classify and prioritize
the downlink traffic for all 802.11e clients. The 802.11e clients will also classify and prioritize the
uplink traffic. If selected, the Turbo Voice and the Advanced Wireless QoS options are displayed:
Turbo Voice - Select to enable all downlink traffic that is classified to the Voice (VO) AC and
belongs to that WM-AD to be transmitted by the AP via a queue called Turbo Voice (TVO)
instead of the normal Voice (VO) queue. When Turbo Voice is enabled together with WMM or
802.11e, the WMM and/or 802.11e clients in that WM-AD are instructed by the AP to transmit all
traffic classified to VO AC with special contention parameters tailored to maximize voice
performance and capacity.
5 To define the service class and DSCP marking for the WM-AD, select the Priority Override
checkbox. For each DSCP you can click one of the eight service classes.
Service class - From the drop-down list, click the appropriate priority level:
Network control (7) - The highest priority level.
Premium (Voice) (6)
Platinum (5)
Gold (4)
Silver (3)
Bronze (2)
Best Effort (1)
Background (0) - The lowest priority level
DSCP marking - From the drop-down list, click the DSCP value used to tag the IP header of the
encapsulated packets.
6 If you want to assign a service class to each DSCP marking, clear the Priority Override checkbox
and define the DSCP service class priorities in the DSCP classification table.
When Priority Override is enabled, the configured service class overrides queue selection in the
downlink direction, the 802.1P user priority for the VLAN tagged Ethernet packets and the user
priority for the wireless QoS packets (WMM or 802.11e), according to the mapping between service
class and user priority. If Priority Override is enabled and the WM-AD is not locally bridged, the
configured DSCP value is used to tag the IP header of the encapsulated packets. The AP does not
override the DSCP in the IP header of the user packet.
7 The Advanced Wireless QoS options are only displayed if the WMM or 802.11e checkboxes are
selected:
Enable U-APSD - Select to enable the Unscheduled Automatic Power Save Delivery (U-APSD)
feature. This feature can be used by mobile devices to efficiently sustain one or more real-time
streams while being in power-save mode. This feature works in conjunction with WMM and/or
802.11e, and it is automatically disabled if both WMM and 802.11e are disabled.
Use Global Admission Control for Voice (VO) - Select to enable admission control for Voice.
With admission control, clients are forced to request admission in order to use the high priority
access categories in both downlink and uplink direction. Admission control protects admitted
traffic against new bandwidth demands.
Use Global Admission Control for Video (VI) - This feature is only available If admission
control is enabled for Voice. Select to enable admission control for Video. With admission control,
clients are forced to request admission in order to use the high priority access categories in both
downlink and uplink direction. Admission control protects admitted traffic against new
bandwidth demands.
Summit WM User Guide, Software Version 5.3
209