Configuring Quality of Ser vice 339• Weighted Round Robin—Ensures that a single application does not dominate theforwarding capacity of PowerConnect 3324/3348. Weighted Round Robin (WRR)forwards entire queues in a round robin order. Queue priorities are defined by thequeue 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 thehighest forwarding priority are assigned to queue 4, and packets with the lowestforwarding priority are assigned to queue 1. By providing highest forwarding priority toqueue 4 , weighted round robin processes higher priority traffic and ensures that low-priority traffic is forwarded satisfactorily.The scheduling scheme is enabled system-wide. Queues assigned to the strict priority policyare automatically assigned to the highest priority queue. By default, all values are set asstrict priority. When changing to WRR mode, the default weight value is one. Queueweight values can be assigned in any order using WRR. WRR values can be assigned on aper-system basis. Best effort traffic is always assigned to the first queue. WRR values mustbe assigned so that Queue 1 remains best effort.Defining QoS Global ParametersQuality of Service global parameters are set from the QoS Global Parameter pages. To openthe QoS Global Parameters page:• Select Quality of Service > Global Parameters in the Tree View. The QoS GlobalParameters page opens.Q o S G l o b a l P a r a m e t e r s P a g e
