Class of Service Configuration 3

Setting the Service Weight for Traffic Classes

This switch uses the Weighted Round Robin (WRR) algorithm to determine the frequency at which it services each priority queue. As described in “Mapping CoS Values to Egress Queues” on page 3-160,the traffic classes are mapped to one of the four egress queues provided for each port. You can assign a weight to each of these queues (and thereby to the corresponding traffic priorities). This weight sets the frequency at which each queue will be polled for service, and subsequently affects the response time for software applications assigned a specific priority value.

Command Attributes

WRR Setting Table16 – Displays a list of weights for each traffic class (i.e., queue).

Weight Value – Set a new weight for the selected traffic class. However, note that Queue 0 is fixed at a weight of 1, and cannot be configured. (Range: 1-31)

Web – Click Priority, Queue Scheduling. Highlight a traffic class (i.e., output queue), enter a weight, then click Apply.

Figure 3-91 Configuring Queue Scheduling

CLI – The following example shows how to assign WRR weights to each of the priority queues.

Console(config)#queue bandwidth 6 9 12

4-200

Console(config)#exit

 

Console#show queue bandwidth

4-202

Queue ID

Weight

 

--------

------

 

0

1

 

1

6

 

2

9

 

3

12

 

Console

 

 

 

 

 

16. CLI shows Queue ID.

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Accton Technology ES3552XA, ES3526XA manual Setting the Service Weight for Traffic Classes, 200, 202