Avaya 580 - Manual (Page 708)

25-34 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 25
The switch always services the queue that has the highest accumulated
weight. If two queues have the same accumulated weight, the switch first
services the queue that has the highest priority (0 – 7).
Table 25-19 lists the default weight increment for each queue.
For information on how to set up WFQ, see “ Setting Up WFQ ” later in this
chapter.
Example Suppose that the accumulated weight of all queues is set at their weight
increments.
1. The switch services queue 7 because its accumulated weight is 128.
2. The accumulated weight of queue 7 is reset to 128, and the accumulated
weight of all other queues is increased by their weight increment.
At this point, queue 7 and queue 6 both have an accumulated weight of
128.
3. The switch services queue 7 because it is the higher priority queue.
4. The accumulated weight of queue 7 is then reset to 128, and the
accumulated weight of all other queues is increased by their weight
increment.
Now queue 6 has an accumulated weight of 192, and queue 7 has an
accumulated weight of 128.
5. The switch services queue 6 because it has the higher accumulated
weight.
Table 25-19. Default Weight Increments
Queue Weight Increment
WFQ 0 1
WFQ 1 2
WFQ 2 4
WFQ 3 8
WFQ 4 16
WFQ 5 32
WFQ 6 64
WFQ 7 128