PACKET TRANSPORT SYSTEM AND TRAFFIC MANAGEMENT METHOD THEREOF

摘要

PURPOSE: A packet transporting device and a traffic management method is provided to improve the performance and the stability of the packet transporting device by controlling overflow traffic and to prevent the synchronization of an entire region between an OAM CCM packet and data. CONSTITUTION: A link capacity is inferred from an output port (S110). The average of an index weight movement and an output link bandwidth are calculated (S120). Queue level is selected to a physical port to control overflow traffic (S140). The queue level is assigned according to a transfer LSP (Level Switched Path) or a service LSP (S150). The color of the packet is detected (S160). The WRED parameter of a green packet is set (S170). The WRED parameter of a yellow packet is set (S180). The WRED parameter of a red packet is set (S190). [Reference numerals] (AA) Start; (BB) No; (CC) Green; (DD) Yes; (EE) Overflow traffic control; (FF) Remove the synchronization of an entire region; (GG) Yellow; (HH) Green; (II) End; (S110) Infer a link capacity from an output port; (S120) Calculate an output link bandwidth (B) and exponential weighted moving average(EWMA); (S130) Hierarchical Queue?; (S140) Select a queue level to a physical port (ex Level=1); (S150) Select a queue level to Transport LSP or Service LSP (ex Level=3 or 4); (S160) Packet color?; (S170) Minth=0 Maxth=maximum queue length maximum waste probability=0; (S180) Minth=0.3 B Maxth=0.1B x 2 maximum waste probability=100; (S190) Minth=0 B Maxth=0 maximum waste probability=100