Research On The Reconstruction Technology Of Ningxia Telecom Metropolitan Area Network Based On SDN/NFV

Traditional MAN network architecture mainly provides users with access to the Internet channel capacity and control network bandwidth capacity.The business implementation is relatively simple.It lacks capacity of traffic management and business control,and has disadvantages such as low utilization efficiency of equipment,weak self-healing ability of network and high cost of construction and maintenance.For new business application requirements,including automatic driving,smart home,virtual reality and so on,the network needs to have the ability of quick and flexible service opening,good perception,fewer faults and low price.These requirements must be implemented through network refactoring.This thesis firstly analyzes the current network architecture of Ningxia telecom MAN.The problems faced by MAN,such as unreasonable network structure,weak traffic scheduling ability and poor management and control ability,are put forward.Combined with the idea of foreign operators and China telecom group corporation to realize network reconstruction through the application of SDN and NFV technology,this paper proposes Ningxia telecom IP MAN network reconstruction scheme.Build SDN and NFV control platform through data center,integrate current network management system and develop new application system.Add virtual RR equipment and VBRAS equipment,upgrade existing equipment to enable it to have SDN capacity,integrate MAN,ITV CDN nodes.Relying on the existing MAN architecture,Ningxia telecom MAN is capable of rapid deployment and flexible traffic control by using SDN and NFV technology.Finally,according to the reconstruction scheme,the pilot project of VBRAS and random selection network was implemented to verify the technical feasibility of network reconstruction.For Ningxia telecom IP MAN large-scale reconstruction accumulated valuable experience.