MPLS Oriented VPN Network Design And Its Engineering

Due to enormous network expansion, it becomes an inevitable tendency to construct highly extensional and highly manageable VPN networks. But the traditional VPN network can not meet the demands of ISP and Enterprises in expansion and management. MPLS ( Multi-Protocol Label Switching )combines the transmission technology of L2/L3( Data-link-layer and IP-layer).Using the characters of MPLS to construct VPN, It can solve totally these problems. This paper designs and implements a model of MPLS/VPN. Firstly, this paper analyzes and points out the disadvantages of VPN that use traditional tunnel technology. Putting forward the model of MPLS/VPN and demonstrating the realization procession of MPLS/VPN and its characters and advantages in detail. Secondly, this paper designs VPN reconstruction project of transaction supporting network of CHENGDU telecom, constructing the model of MPLS/VPN. Demonstrating the design and implementation of VPN network in main facets, as follow, IGP protocol ,BGP protocol and router-reflect in detail. In addition,applying these ideas in routers. Finally, According to this VPN model, this paper designs and constructs the experimental network and realizes in routers. Testing this VPN in security ,extension and management. By way of the acquired experimental data , It is demonstrated that MPLS/VPN has high security In addition, operation,flexibility and expansion of MPLS/VPN . It is the better than traditional technology of VPN. The model of MPLS/VPN provides a good reference model and project for ISP and Enterprises.