软件定义广域网中基于IPv6分段路由的双栈流量调度算法

针对当前软件定义广域网在应对企业园区部署双协议栈出口链路、园区之间支持双协议栈通信的网络架构下，存在园区任意协议栈出口链路失效时，园区间双栈流量不可通信的问题，提出了一种适用于软件定义广域网的IPv4/IPv6双协议栈环境下的流量调度算法。该算法基于快速重路由机制，通过结合基于IPv6的分段路由技术分为路径编码算法和报文处理算法2部分实现。在广域网双栈出口任一链路失效时将不同园区的双栈流量进行调度。通过在Mininet中的仿真模拟验证了算法的可行性，并利用带宽测量工具iPerf对链路性能进行测量，测量数据表明利用双栈流量调度算法进行双栈流量调度极大地提高了园区间双栈链路的利用率和服务质量。

Dual stack traffic scheduling algorithm and implemention based on segment routing over IPv6 in sofoware defined wide area network

In order to solve the problem that the dual stack traffic can not be communicated when any protocol stack link fails in software defined wide area network, a dual stack traffic scheduling algorithm for software defined wide area network is proposed. The algorithm is based on fast rerouting mechanism. By combining segment routing over IPv6, it schedules the dual stack traffic of different parks when one of the wide area network dual stack link fails. Through the simulation in mininet, the feasibility of the algorithm is verified, and the link performance is measured by using the bandwidth measurement tool iPerf. The data shows that dual stack traffic scheduling algorithm greatly improves the quality of service and utilization rate of dual stack links between different parks.