Queue-servicing algorithms, How wfq works, Queue-servicing algorithms -33 – Avaya 580 User Manual

Page 707: Wfq -33

Document No. 10-300077, Issue 2

25-33

80-Series QoS

Queue-Servicing Algorithms

The following queue-servicing algorithms are available for egress queues:

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Weighted fair queueing (WFQ)

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Strict Priority

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Class-based queueing (CBQ)

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Class-based weighted fair queueing (CBWFQ)

* Note: In earlier versions of the switch software, you could set ingress

queues to use the weighted fair queuing (WFQ) and strict
priority queue-servicing algorithms. In v5.3.1 and later, you can
set only egress queues to use these queue-servicing algorithms.
To service ingress queues, use the policing feature.

This section contains the following information and procedures:

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WFQ

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Strict Priority Queueing

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■

■

■

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Setting Up Strict Priority Queueing

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Setting Up CBQ

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Setting Up CBWFQ

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Displaying the Queue-Service Settings

WFQ

How WFQ Works

WFQ is the default queue-servicing algorithm. When a port is set to use the
WFQ algorithm, each queue:

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Is assigned a weight increment. This value never changes.

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Maintains an accumulated weight. After the switch services a
queue, its accumulated weight is reset to the value of its weight
increment, and the accumulated weight for the other queues is
increased by their respective weight increments.

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