IPRAN Based Multi Service Transfer VPN Interconnection Technology

IPRAN,IP radio access network,is a data packet of IP and can provide a traffic carry of telecom level,and is a comprehensive transmission platform capable of being compatible with traditional Ethernet service,TDM service and ATM service.The traditional IPRAN technology network is not applicable to the network structure and protection capacity of the network layer,and cannot meet the fast(<100ms)protection reverse requirements of the telecommunications level.For this study to establish a new VPN network model based on IPRAN,able to adapt to the hierarchical network model,enhance their ability to protect and improve the network flexibility and availability.Applied to the operator network will have important application value.In this thesis,we've been working on a multi-business teleport VPN interconnectivity based on IPRAN.Analyzing the needs of the IPRAN's new business and the carrying capacity of the traditional IPRAN Internet network,it points out that the traditional IPRAN network technology has the ability to protect and not be flexible,not to be able to provide the flexibility of the secondary exchange function and the three-tier routing function,not to adapt to the new business needs.In view of that demand analysis of the business,a scheme design and protection scheme of VPN interconnection technology was studied.The protection capability of the traditional IPRAN network has been improved,and the single node failure,multi-node failure and multi-link fault of IPRAN Internet have been realized.The IPRAN interlayer exchange function and the three-layer routing function are realized.VPN interconnection technology with the traditional IPRAN network scheme comparison and analysis the following conclusions,technology of VPN interconnection network scheme compared to traditional IPRAN networking with connectivity strong,strong protection ability and flexibility,etc.Combined with the actual case the VPN interconnection technology network in China telecom city hosted network construction.Testing the case to test the availability of the VPN interconnectivity technology and to achieve the flexibility,safety,reliability of the IPRAN Internet and the lower cost of the network.