Strict-priority scheduling

Interfaces on the listed routers support strict-priority scheduling. Configured queues are processed in strict-priority order. Within the guaranteed region, multiple CoS queues that compete in the same hardware-based priority level are selected based on the packet round-robin algorithm, while within the excess region, selection is based on the WRR algorithm. The queues receive equal share when they send the same packet size. Otherwise, the queues receive shares proportional to the respective packet sizes sent. 

To enable configuration of strict-priority scheduling for a physical interface, include the strict-priority-scheduler statement in the traffic control profile associated with the interface.