Research On MPLS VPN On Network Of Distance Education System

For present distance education platform,the lack of existing distance education platform is the important reason to avoid the development. The translation of ATM and Frame Relay are not enough to assume the usable security and QoS of network. The goal of this paper is to give a solution of new network instruction model of distance education platform based on theory of VPN over MPLS.This paper is based on a practical project. Focusing on each stage of a recognition task, including MPLS VPN basic design , QoS design and design of voice and video data translation. This paper has done lot of thorough researches, and put forward not a few new algorithms and implementations.On the MPLS VPN basic design, this paper firstly give the design of VPN point to data center and data link. Then give the safety design on distance education platform and quick recover of router fault. Point out that the MPLS VPN model is the best way to do the network rework. And MPLS VPN is the base of high QoS and good translation of voice and video.On QoS design. This paper, based on a lot of experiments, gives out the policy of below 100MBit/s and up 100MBit/s. Then gives out the special case in USA. Besides, it discusses work on distance education platform.On translation design of voice and video, for the unique voice translation of distance education platform network, this paper puts forward a new plan for VoIP on MPLS VPN. Using application-level gateway to get off crossing of NAT and virtual firewall. On translation of video data, combine MPLS VPN technology with protocol H.323, build a safe and stable network on distance education platform.In this paper, not only a rebuilding of old distance education platform network based on ATM /frame replay and solve the problem of router Bottlenecks, hard recovery of data link and low security, but also the methods are commonly helpful to other platform network. It will helpful to these companys that has much subsidiary or shared resource or duplicated IP address or data center reworking.