Allied Telesis AT-S63 - Manual (Page 148)

Chapter 12: Quality of Service
148 Section II: Advanced Features
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 “Scheduling” in Chapter 13, “Quality of
Service,” in the AT-S63 Management Software 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.
The System page is displayed with the General tab selected by
default, as shown in Figure 5 on page 40.
2. From the Configuration menu, select the QoS option.
The QoS page is displayed with the CoS tab selected by default, as
shown in Figure 40 on page 142.
3. Select the Scheduling tab.
The Scheduling tab is shown in Figure 42 on page 146.
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 145.
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. For an example, refer to
Table 4.
Table 4. Example of Weighted Round Robin Priority
Port Egress Queue
Maximum Number of
Packets
Q3 15