The queue ID is used to uniquely identify the queue. The queue ID is only unique within the context of the QoS policy where the queue is defined. It allows the user to define multiple queues with different characteristics and identify them while associating it with different FCs.
The software creates eight queues by default with queue ID 1 to 8. The queue ID is automatically assigned to the eight egress queues by the software; it is not configurable. Only some of the queue parameters that determine the queue characteristics are configurable.