针对传统MPLS-VPN组网架构存在的扩展性不足、安全性不高与传输质量差等问题,提出一种使用层次化运营商边缘设备技术优化网络架构的方法.采用设备层级化的方式对网络拓扑结构进行优化改造,使设备的路由控制和数据转发实现最大限度的分离,引入链路利用率权值对等价多路径选择算法进行优化,并把优化前后网络的各项性能指标进行对比.实验结果表明,优化后流量的负载更均衡,数据包的延时、抖动、丢包率明显下降,网络的扩展性、安全性以及传输质量明显提高.%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.
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