User's Guide

Table Of Contents
hwc_vnsconfiguration.fm
Configuring a VNS
Configuring WLAN Services
9034530-02,
March 2010
HiPath Wireless Controller, Access Points and Convergence Software V7.11, User Guide 345
6.9.4.3 Configuring the priority override
Priority override allows you to define and force the traffic to a desired priority level.
Priority override can be used with any combination, as displayed in Table 25. You
can configure the service class and the DSCP values.
When Priority Override is enabled, the configured service class overrides the
queue selection in the downlink and uplink direction, the 802.1P UP for the VLAN
tagged Ethernet packets, and the UP for the wireless QoS packets (WMM or
802.11e) according to the mapping in Table 24. If Priority Override is enabled
and the VNS 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.
6.9.4.4 QoS modes
You can enable the following Qos modes for a WLAN Service:
Legacy – If enabled, the AP will classify and prioritize the downlink traffic for
all clients according to the same rules.
•WMM – If enabled, the AP will accept WMM client associations, and will
classify and prioritize the downlink traffic for all WMM clients. WMM clients will
also classify and prioritize the uplink traffic.
802.11e – If enabled, the AP will accept WMM client associations, and will
classify and prioritize the downlink traffic for all 802.11e clients. The 802.11e
clients will also classify and prioritize the uplink traffic.
Turbo Voice – If any of the above QoS modes are enabled, the Turbo Voice
mode is available. If enabled, all the downlink traffic that is classified to the
Voice (VO) AC and belongs to that VNS is transmitted by the AP via a queue
called Turbo Voice (TVO) instead of the normal Voice (VO) queue. The TVO
queue is tailored in terms of contention parameters and number of retries to
maximize voice quality and voice capacity.
All combinations of the three modes are valid. The following table summarizes all
possible combinations:
Configuration
Legacy mode x x x x
WMM mode x x x x
802.11e mode x x x x