Alvarion BreezeACCESS VL System Manual page 209

In addition, the Wireless Link Prioritization, which is a licensable feature, enables
to configure parameters that affect the prioritization of traffic in the wireless link
for packets with high/low priority from different units.
4.2.6.6.3.1 VLAN Priority Threshold
The VLAN Priority Threshold is applicable for Trunk and Hybrid Links only. It
enables defining the value of the VLAN Priority Threshold. If the VLAN Priority
field in a tagged frame is higher than the value of the VLAN Priority Threshold
parameter, the packet will be routed to the High queue. If the VLAN Priority field
is lower than or equal to this value, the packet will be transferred to the Low
queue (unless it is assigned a High priority by another classifier).
Valid values range from 0 to 7.
The default value is 7, which means that all packets get a low priority (equivalent
to disabling the VLAN-based classifier).
4.2.6.6.3.2 ToS Prioritization
The ToS Prioritization parameters enable defining prioritization in accordance
with either the 3 IP Precedence bits in the IP header in accordance with RFC 791,
or the 6 DSCP (Differentiated Services Code Point) bits in accordance with RFC
2474. The ToS Prioritization menu includes the following parameters:
4.2.6.6.3.2.1 ToS Prioritization Option
The ToS Prioritization Option defines whether ToS-based prioritization is enabled
or disabled. The following options are available:
Disable
Enable IP Precedence (RFC791) Prioritization
Enable DSCP (RFC2474) Prioritization
The default is Disable.
4.2.6.6.3.2.2 IP Precedence Threshold
The IP Precedence Threshold parameter is applicable when the ToS Prioritization
Option is set to Enable IP Precedence (RFC791) Prioritization. If the value of the 3
IP Precedence bits in the IP header is higher than this threshold, the packet is
routed to the High queue. If the value is lower than or equal to this threshold, the
packet will be transferred to the Low queue (unless it is assigned a High priority
by another classifier).
Valid values range from 0 to 7.
The default value is 4.
Operation and Administration
Menus and Parameters
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