1-21To do… Use the command… RemarksConfigure queue schedulingqueue-scheduler wrrqueue0-weight queue1-weightqueue2-weight queue3-weightqueue4-weight queue5-weightqueue6-weight queue7-weightRequiredBy default, the queuescheduling algorithm adoptedon all the ports is WRR. Thedefault weights of the eightoutput queues of a port are 1,2, 3, 4, 5, 9, 13, and 15 (in theorder queue 0 through queue7).A port of an S5600 Ethernet switch supports eight output queues. SP and WRR queuescheduling algorithms are available. With WRR adopted, if you set the weight of one ormultiple queues to 0, the switch will add the queue or these queues to the SP group, whereSP is adopted. For other queues, WRR still applies. In this case, both SP and WRR areadopted.In cases where both SP and WRR queue scheduling algorithms are adopted, the queues inthe SP group take precedence over other queues. For example, if queue 0, queue 1, queue2, and queue 3 are in the SP group, queue 4, queue 5, queue 6, and queue 7 are scheduledusing WRR, the switch will schedule the queues in the SP group preferentially by using theSP algorithm. Then queues outside the SP group are scheduled by using the WRRalgorithm only when all the queues in the SP group are empty.z The queue scheduling algorithm specified by using the queue-scheduler command insystem view takes effect on all the ports. The queue scheduling algorithm configuredin port view must be the same as that configured in system view. Otherwise, the systemprompts configuration errors.z If the weight (or bandwidth value) specified in system view for a queue of WRR queuingcannot meet the requirement of a port, you can modify the weight (or bandwidth value)for this port in the corresponding Ethernet port view. The new weight (or bandwidthvalue) takes effect only on the port.z If the weight (or bandwidth value) specified in system view for a queue of SP-WRRqueuing in the command cannot meet the requirement of a port, you can modify theweight (or bandwidth value) for this port in the corresponding Ethernet port view. Thenew weight (or bandwidth value) takes effect only on the port.z The display queue-scheduler command cannot display the queue weight (orbandwidth value) specified in Ethernet port view.Configuration example# Adopt WRR for queue scheduling, setting the weights of the output queues to 2, 2, 3, 3,4, 4, 5, and 5 (in the order queue 0 through queue 7). Then, verify the configuration with thedisplay queue-scheduler command. system-view
