Nowadays diversified campus network system in the multi-campus has many disadvantages. There are traffic mixed up, inefficient application, costly network construction cost, low utilization rate of resources, inferior flexibility and extensibility of traditional VPN technology. Using MPLS VPN technology, the characteristics of the tunnel dynamic routing establishment, effective isolation, the diversified campus network system be mixed. It is better than before in application, maintenance, management.%现有跨校区运行多种业务系统的校园网络，存在业务流量混合上行，应用效率低下、专网建设成本代价大，资源利用率低、传统VPN技术灵活与扩展性差的弊端。采用MPLS VPN技术，利用其隧道动态建立、路由有效隔离的特点，将校园网多业务合理融合在一起，较之原有网络，在应用、维护、管理上具备一定的优越性。
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