关键词: 路由, 数据转发, 标签转发, 多路径, 传输质量, 网络层次

Abstract: Considering that the traditional MPLS-VPN network architecture has problems like inadequate scalability,low security and poor transmission quality,a method using hierarchical Provider Edge(PE) technology to optimize network architecture is proposed.The method uses the hierarchical way to optimize the network topology and achieves the maximum separation of the routing control and data forwarding.The weight of the link utilization is introduced to optimize Equal-Cost Multipath(ECMP) selection algorithm and various performance indicators of the network are compared before and after the optimization.Experimental results show that this method can make the optimized traffic load more balanced and significantly reduce packet delay,jitter and packet loss rate,and it obviously improves network scalability,security and transmission quality.

Key words: routing, data forwarding, label forwarding, multipath, transmission quality, network level