METHOD FOR ASSIGNING PRIORITY TO TRAFFIC BETWEEN LOCAL AREA NETWORKS INTERCONNECTED VIA A BACKBONE NETWORK

摘要

It distributes and is connected to backbone network (12) via core network (12) for the communication between piority LANs (11) interconnection to a kind of method of the present invention and passes through transmission line (14a-14e). To can control maximum delay and business is especially the requirement with high interactivity, (1) length (38) of frame determines and predetermined accuracy from LAN (11), obtains at least two length classifications with respective priority status; (2) a pair of of address that at least one address is formed by receiving frame source and destination address and the frame of corresponding address generally queue awaiting transmission frame state than the priority with lower priority length corresponding to the frame, or frame, these frames have in the queue in scheduled preceding period (transport); (3) it is length according to class categories and address check that frame (39) tracking telegram, which is applied at least two different transmission queues (33a and 33b) from different priority status,; (at least some frame transmission labels of step d) are to distinguish priority frame from other frames; (5) according to the priority-labeled state in checking the label before buffer point (average) and frame.