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BreezeMAX Wi² and BreezeACCESS Wi² System Manual
Chapter 5 - Working with Virtual Networks
5.5
Quality of Service (QoS)
The MAP features a quality of service (QoS) implementation that provides a wide range of methods
for traffic prioritization.
5.5.1
QoS Priority Mechanism
The QoS priority mechanism defines four traffic queues based on the WMM standard. In order of
priority, these queues are:
Each QoS priority option maps traffic to one of the four traffic queues. Users that do not support the
QoS priority option defined on a virtual network are always assigned to queue 3.
QoS priority is only applied to wireless traffic sent by APs to wireless users with the following
exception: If a virtual network-based priority setting is selected and egress traffic is assigned to a
VLAN then the Virtual Network-based priority settings are mapped to a corresponding 802.1p value
for all incoming traffic received from wireless clients and forwarded onto the VLAN. For example,
if Virtual Network-based priority
High
is selected, then traffic from wireless clients will be mapped
to the appropriate 802.1p value for queue 2.
5.5.1.1
SVP Support
Spectralink Voice Protocol is an open standard for the prioritization of voice traffic on wireless and
wired LANs. SVP traffic is sent on queue 1 for all priority mechanisms except Virtual
Network-based.
5.5.1.2
802.1p
802.1p traffic is classified based on the VLAN priority field present within the VLAN header.
Queue
Typically used for
1
2
3
4
Voice traffic
Video traffic
Best effort data traffic
Background data traffic
NOTE
Traffic delivery is based on strict priority (per the WMM standard). Therefore, if excessive traffic is
present on queues 1 or 2, it will reduce the flow of traffic on queues 3 and 4.
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