HP StorageWorks 8/80 Brocade Converged Enhanced Ethernet Administrator's Guide - Page 132

9 Scheduling TABLE 19 Supported scheduling configurations Traffic Class SP0 SP1 SP2 SP3 SP4 SP5 SP6 SP8 7 WRR8 SP1 SP2 SP3 SP4 SP5 SP6 SP8 6 WRR7 WRR7 SP1 SP2 SP3 SP4 SP5 SP7 5 WRR6 WRR6 WRR6 SP1 SP2 SP3 SP4 SP6 4 WRR5 WRR5 WRR5 WRR5 SP1 SP2 SP3 SP5 3 WRR4 WRR4 WRR4 WRR4 WRR4 SP1 SP2 SP4 2 WRR3 WRR3 WRR3 WRR3 WRR3 WRR3 SP1 SP3 1 WRR2 WRR2 WRR2 WRR2 WRR2 WRR2 WRR2 SP2 0 WRR1 WRR1 WRR1 WRR1 WRR1 WRR1 WRR1 SP1 Figure 16 shows that extending the frame scheduler to a hybrid SP+WRR system is fairly straightforward. All SP queues are considered strictly higher priority than WRR so they are serviced first. Once all SP queues are drained, then the normal WRR scheduling behavior is applied to the non-empty WRR queues. FIGURE 16 Strict priority and Weighted Round Robin scheduler Scheduling the QoS queue Perform the following steps from Privileged EXEC mode specify the schedule to use. 1. Enter global configuration mode. switch#configure terminal 2. Specify the schedule to use and the traffic class to bandwidth mapping. switch(config)#qos queue scheduler strict-priority 4 dwrr 10 20 30 40 Example of setting the traffic class frame scheduler for 4 Strict Priority Traffic Class and 4 DWRR Traffic Class with Traffic Class 0 getting 10 percent bandwidth, Traffic Class 1 getting 20 percent bandwidth, Traffic Class 2 getting 30 percent bandwidth, and Traffic Class 3 getting 40 percent bandwidth. switch:admin>cmsh switch>enable switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. switch(config)#qos queue scheduler strict-priority 4 dwrr 10 20 30 40 switch(config)#end 3. Enter the copy command to save the running-config file to the startup-config file. switch#copy running-config startup-config 112 Converged Enhanced Ethernet Administrator's Guide 53-1001346-01