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Configuring egress scheduling – Allied Telesis AT-S62 User Manual

Page 180

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Chapter 15: Class of Service

180

Section II: Advanced Operations

Configuring Egress Scheduling

This procedure explains how to select and configure a scheduling method
for QoS. Scheduling determines the order in which the ports handle
packets in their egress queues. For an explanation of the two scheduling
methods, refer to the AT-S62 Menus Interface User’s Guide. Scheduling is
set at the switch level. You cannot set this at the port level.

To change scheduling, perform the following procedure.

1. From the Home Page, select Configuration.

2. From the Configuration menu, select the Services menu option.

3. Select the Queuing & Scheduling tab.

The Scheduling tab is shown in Figure 51 on page 179.

Note

The Configure CoS Queues to Egress Queues section in the tab is
explained in the previous procedure “Mapping CoS Priorities to
Egress Queues” on page 178
.

4. To select a scheduling method, click either Strict Priority or

Weighted Priority in the Configure Egress Weights section of the tab.
The default is Strict Priority.

Skip the next step if you select Strict Priority. Queue weights do not
apply to Strict Priority scheduling.

5. If you selected Weighted Priority, use the Queue # Weight fields to

specify for each queue the number of packets you want a port to
transmit before it goes to the next queue.

Leaving the default value of 1 for each queue results in all egress
queues being given the same priority.

6. Click Apply.

A change to the scheduling method is immediately implemented on
the switch.

7. To permanently save the change, click the Save Config menu option.