This read-write integer selects the queueing and scheduling algorithm used on the interface: pq(1) for priority queueing, wrr(2) for weighted round-robin, wfq(3) for weighted fair queuing, disabled(8) to turn QoS off on that interface, or delete(9) to remove the entry. An admin picks pq for strict priority handling of latency-sensitive traffic, or wrr/wfq to share bandwidth fairly across classes based on qosPolicyWeight.