Dell N3200-ON Networking N-Series Switches CLI Reference Guide version 6.8.0 - Page 762

This example configures simple RED on an N1500 series switch. CoS queue 1 is globally configured for simple RED with a congestion threshold of 50% and a drop probability of 0.781% for green colored traffic. console(config)# random-detect queue-parms 1 min-thresh 50 0 0 drop-probscale 8 0 0 console(config)#cos-queue random-detect 1 cos-queue strict Use the cos-queue strict command in either Global Configuration mode or Interface Configuration mode to activate the strict priority scheduler mode for the specified queue. To restore the default weighted scheduler mode for each specified queue, use the no form of this command. Syntax cos-queue strict {queue-id-1} [{queue-id-2} ... {queue-id-n}] no cos-queue strict {queue-id-1} [{queue-id-2} ... {queue-id-n}] • queue-id-1 - Specifies the queue ID for which you are activating the strict priority scheduler. You can specify a queue ID for as many queues as you have (queue-id 1 through queue-id-n). (Range: 0-6) Default Configuration This command has no default configuration. Command Mode Global Configuration mode or Interface Configuration (gigabitethernet, port-channel, tengigabitethernet, fortygigabitethernet) mode User Guidelines Strict priority (SP) queues are scheduled in priority order ahead of WRR queues. Strict priority queues are allocated unlimited bandwidth by default. Configuring the min-bandwidth on a CoS queue also configured for strict priority wastes the scheduler slots. Use the cos-queue min-bandwidth command on lower priority SP and WRR queues to ensure fairness to lower priority queues by reserving a specific amount of scheduler bandwidth. Use the show interfaces cos-queue command to display the class of service settings. Layer 2 Switching Commands 762