VIP MPLS VPN Serivce's Design And Implementation On IP Backbone

With the rapid development of IP network, people dependent on IP network even more, and MPLS VPN has been matured step by step. On one hand MPLS VPN can reduce the user' s cost of lease line and makes the maintenance simple. On the other hand MPLS VPN is a connection-oriented technique based on IP network, which provides corresponding guarantees for many services. So more and more people recognize the MPLS VPN, and it has comes the major mode of service operator' s IP VPN services.The article introduces the base theory of MPLS, L2/3 MPLS VPN, and compares the L2 and L3 MPLS VPN. Also introduces the MPLS differserv and MPLS TE. Because of industry intense competition, how to provide various services satisfying user' s requirement of different level has come the development key. The article summaries many operators' SLA mode, such as AT&T, Equant, Infonet, and Willianms, also analyses user' s requirement on SLA by the survey result of Consultation Company.Combining the working experience, the article emphatically VIP MPLS VPN service' s design and deployment on China telecom CN2 network, including the design of CN2 backbone network, L2/3 VPN and SLA implement, also enumerates some applications using MPLS VPN carrier, such as Ipsec, VOIP, etc. FinallyL combing the CN2 test related L3 mpls vpn, It propose some solution for next optimizing design which are proved in lab.