Application And Research Of MPLS VPN Technology In Implementation Of FTTX Access Service

Along with the development of network technology, people’s demands for communication is no longer restricted in traditional voice communication, and the demands for the visual communication service such as VoIP and IPTV have increased rapidly, which leads to the higher requirements for network performance. Based on the requirements, this paper studies the reconstruction and optimization for the existing IP Metropolitan Area Network(IP MAN) of Shaanxi company of China Telecommunication Company, which is important to improve the performance of the network.On the basis of analyzing overall framework designs of the IP MAN and soft exchange bearing net, the VoIP service characteristics and technology needs, the paper presents a schem which can improve the voice quality and safe bearing of VoIP, by accessing to the FTTX and setting up MPLS VPN on IP MAN. In order to prevent the security risk of connecting IP Metropolitan Area Network to Soft Exchange Carrying Network, the paper introduces the SBC(Session Border Controller) as the security solution scheme, which is based on the analysis of the network attacks risk of the FTTX. At the same time, according to the requirement of QoS of VoIP services, the paper gives the QoS guaranteed schem based on the DiffServ(Different Service) model. Finally, based on the detail analyses of the applied schem using the MPLS VPN on the IP MAN, the configure solution scheme is given. The test results show that the proposed reconstruction shemes are feasible and improve the performances of the exsiting network effectively.