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4.3.3.4 Priority Queue Mapping
This web page is used to select SPQ/WFQ/WRR queuing mechanism and to setup the
mapping between VLAN priority levels and system internal queues. From the Bridge
menu, click on Access Control and then Priority Queue Mapping. The following page is
displayed:
The queues for Giga and ATM interfaces are different.
Giga:
The Giga interface has 4 Queues and these queues can only work on Strict Priority
Queuing (SPQ) scheduling. The priorities of these queues are: Q3 > Q2 > Q1 > Q0.
ATM:
Each ATM PVC bridge interface on each ADSL port has 8 Queues and can work in SPQ
or SPQ/WFQ mix mode.
For SPQ, the priorities of these queues are: Q7 > Q6 > Q5 > Q4 > Q3 > Q2 > Q1 > Q0.
For SPQ/WFQ mixed, the priority of SPQ queues (Q7~Q4) is higher than WFQ queues
(Q3~Q0).
And:
Q7 ~ Q4 are for SPQ and the priorities are Q7 > Q6 > Q5 > Q4.
Q3 ~ Q0 are for WFQ (Weighted Fair Queuing) and you can define the weight value for
Q3 ~ Q0.
Note that if each queue has different weight value, the system will work as WFQ mode. If
all queues have the same weight value, the system will work as Weighted Round Robin
(WRR) mode.
The system allows 8 priority levels fully work as WFQ or WRR mode, via using queues of
Q3 ~ Q0 only in the Priority Queue Mapping table.
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