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1. (WO2010115365) PATH COMPUTATION METHOD, PATH COMPUTATION ELEMENT, NODE DEVICE AND NETWORK SYSTEM

Pub. No.:    WO/2010/115365    International Application No.:    PCT/CN2010/071518
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Sat Apr 03 01:59:59 CEST 2010
IPC: H04L 12/24
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
WANG, Yu
王彧
SUN, Jun
孙俊
Inventors: WANG, Yu
王彧
SUN, Jun
孙俊
Title: PATH COMPUTATION METHOD, PATH COMPUTATION ELEMENT, NODE DEVICE AND NETWORK SYSTEM
Abstract:
A path computation method, a path computation element, a node device and a network system are provided. The method comprises the following steps: receiving a path computation request message (S201), wherein the path computation request message carries a network type identification and traffic parameter constraint conditions of the path required to be computed, and the network type identification indicates the type of the network where the path required to be computed locates; determining the network by determining the network type identification, and computing the path in the network according to the traffic parameter constraint conditions (S202); sending the path computation response message (S203), wherein the path computation response message carries the computed path. The present scheme adopts the way of carrying the network type identification in the path computation request message, and computes the path in the network according to the traffic parameter constraint conditions after determining the network based on the network type identification, thus solving the problem of distinguishing and computing the traffic engineer path for various types of services in Multi-region Networks.