Dell PowerConnect 3348 User's Guide - Page 339

• Weighted Round Robin-Ensures that a single application does not dominate the forwarding capacity of PowerConnect 3324/3348. Weighted Round Robin (WRR) forwards entire queues in a round robin order. Queue priorities are defined by the queue length. The longer the queue length, the higher the queue's forwarding priority. For example, if four queues have queue weights of 1, 2, 3 and 4, packets with the highest forwarding priority are assigned to queue 4, and packets with the lowest forwarding priority are assigned to queue 1. By providing highest forwarding priority to queue 4 , weighted round robin processes higher priority traffic and ensures that lowpriority traffic is forwarded satisfactorily. The scheduling scheme is enabled system-wide. Queues assigned to the strict priority policy are automatically assigned to the highest priority queue. By default, all values are set as strict priority. When changing to WRR mode, the default weight value is one. Queue weight values can be assigned in any order using WRR. WRR values can be assigned on a per-system basis. Best effort traffic is always assigned to the first queue. WRR values must be assigned so that Queue 1 remains best effort. Defining QoS Global Parameters Quality of Service global parameters are set from the QoS Global Parameter pages. To open the QoS Global Parameters page: • Select Quality of Service > Global Parameters in the Tree View. The QoS Global Parameters page opens. QoS Global Parameters Page Configuring Quality of Ser vice 339