D-Link DES-3226 Reference Manual - Page 145

DES-3226S Layer 2 Fast Ethernet Switch User's Guide config scheduling Purpose Used to configure the traffic scheduling mechanism for each COS queue. Syntax config scheduling [max_packet /max_latency ] Description The switch contains 4 hardware priority queues. Incoming packets must be mapped to one of these four queues. This command is used to specify the rotation by which these four hardware priority queues are emptied. The switch's default (if the config scheduling command is not used, or if the config scheduling command is entered with both max_packet and max_latency parameters are set to 0) is to empty the 4 hardware priority queues in order − from the highest priority queue (hardware queue 3) to the lowest priority queue (hardware queue 0). Each hardware queue will transmit all of the packets in its buffer before allowing the next lower priority queue to transmit its packets. When the lowest hardware priority queue has finished transmitting all of its packets, the highest hardware priority queue can again transmit any packets it may have received. The max_packets parameter allows you to specify the maximum number of packets a given hardware priority queue can transmit before allowing the next lowest hardware priority queue to begin transmitting its QOS Commands 145