DEVICE AND METHOD FOR NETWORK RELAY

摘要

PROBLEM TO BE SOLVED: To perform high quality transfer under stable QoS(quality of service) control. SOLUTION: A transfer engine stores a packet received through a network interface part 30 into a packet buffer 12 and stores header information into a header RAM 11. A retrieval engine 14 retrieves transfer control information such as transfer destination information and action information by using the header information and writes it in the header RAM 11. In the transfer engine, an output packet is prepared on the basis of the information stored in the packet buffer 12 and the header RAM 11 and outputted to the transfer destination. A switch part switches the output packet to a routing processing part 10 of the destination. QoS control is individually executed at plural spots of an input side routing processing part 10, an output side routing processing part 10 and the switch part.