Research and Simulation on VPN Networking Based on MPLS

In order to solve the disadvantage of traditional "special line" networking, and ameliorate limitation of traditional IP network, frame relay and the ATM network. A VPN networking project which based on MPLS is put forward. Then analyze the customer data transmitting process of MPLS VPN in detail. Some simulation scenes are introduced by OPNET, get the results that MPLS VPN has lower delay and packet losing. And get a useful conclusion that MPLS VPN has vast application foreground in company, business enterprise which crosses over different location and military communication networking.