Alvarion BreezeACCESS EZ AU-EZ, System Manual

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Chapter 4 - Operation and Administration Menus and Parameters
BreezeACCESS EZ AU-EZ 119 System Manual
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Source/destination IP address
Each one of these classifiers can be activated/deactivated. If more than one
classifier is activated, the priority of each packet will be determined by the highest
priority given to it by the active classifiers.
The Traffic Prioritization menu enables activating/deactivating each of these
classifiers, and configuring the applicable parameters for each classifier.
The Low Priority Traffic Minimum Percent parameter can be used to prevent
starvation of low priority traffic by ensuring that a certain number of low priority
packets are transmitted even at the expense of high priority traffic.
4.2.6.6.3.1 VLAN Traffic Prioritization
This menu accesses the VLAN Priority Threshold. The VLAN Priority Threshold is
applicable for Trunk and Hybrid Links. 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:
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Disable
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Enable IP Precedence (RFC791) Prioritization
NOTE
Note that in BreezeACCESS-EZ traffic prioritization is available only for downlink transmissions. As
a result, in most applications there is no meaningful benefit to this feature.