Description: The number of packets currently queued for transmission on this port in queue 0. The numbering of queues indicates the priority of handling the traffic in that queue, with the higher queue number getting higher priority. The priority values in packets are mapped to queues via a priority to queue mapping. The default priority to queue mapping is as follows: Priority Queue value number 7 7 6 6 5 5 4 4 3 3 2 1 1 0 0 2 This mapping allows the default priority value of 0 to map to a queue which is not the lowest priority queue, allowing traffic classes to be assigned a lower priority queue than the default.