PTN网络伪线(PW)双归应用研究

Research on PTN network pseudo wire(PW) dual-homing application

通信技术日新月异,伴随着用户对文字、图像、语音等多媒体信息需求的增加,现代通信网络业务需逐步向IP网络化发展,导致承载传送网络也要向IP网络化方向演进,即出现了分组传送网PTN。在PTN网络中采用伪线(PW)、隧道(TUNNEL)、OAM等技术进行业务的区分,在PTN网络中一般采用PW伪线双归保护配置,提高通信网络的稳定性和可靠性,以达到用户对承载传送网络的感知。

communication technologies change rapidly. Along with the users＇ increasing needs for multimedia information such as text, image and voice, the modern communication network business needs to move gradually to IP networking, which leads to the IP networking evolution of bearing transmission network. Therefore, Packet Transport Network（PTN） appears. In PTN network, the technologies of pseudo wire（PW）, TUNNEL, OAM are used to distinguish business. Pseudo wire dual-homing protection is generally adopted to improve the stability and reliability of communication network so as to achieve the user perception of carrying transmission network.