Packet forwarding device and packet priority setting method

摘要

A packet forwarding device 98, 401, 402 with a shaping unit 1, 799, which is provided with queues for storing high priority packets and queues for storing low priority packets. The shaping unit 1, 799 transmits a packet read out from the non priority queue by giving a high priority when no transmit-wait packet exist in the priority queue even though the time to transmit a packet from the priority queue is reached.