3-84 Sun Fire B1600 Blade System Chassis Switch Administration Guide •June 2003
3.3.5.3 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 3-80, the traffic classes are mapped to one of the
four egress queues provided for each port. Youcan 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.
When setting the weight for traffic classes through the web interface or CLI, the
following parameters can be configured:
■TrafficClass (Queue)14 – A list of weights for each traffic class.
■WRR Weights – The weight (between 1 and 255) for the selected trafficclass.

Web Interace: Setting the Service Weight for Traffic Classes

1. Open Switch Config ⇒Class of Service ⇒Basic TrafficPrioritisation.
2. Scroll to Setting the Service Weights for TrafficClasses (Egress Queues).
3. Select a traffic class (output queue).
4. Type a value in the WRR Weights text field.
5. Click Save.
FIGURE 3-27 The Switch Config ⇒Class of Service Window for Setting Service Weights for
TrafficQueues
14.CLIshows Queue ID.