A data exchange plane failure recovery method for quantum key distribution

The invention discloses a data exchange plane fault recovery method oriented to quantum secret key distribution, a loop-based data plane failure recovery method of the method firstly selects a loop asa shared backup path of all streams, then we divide the network into several domains. Based on the loops and domains, we propose a failure recovery strategy, based on which backup paths share more links, and then we design a model to configure the flow table of the switch, so that the flow table entries needed for failure recovery can be reused by a large number of planned backup paths. 本发明公开了种面向量子秘钥分配的数据交换平面故障恢复方法，本方法基于环路的数据平面故障恢复方法首先选取条环路作为所有流的共享备份路径，然后将网络划分成若干个域，基于环路和域我们提出故障恢复策略，基于该恢复策略备份路径共享较多的链路，然后我们设计模式来配置交换机的流表，从而故障恢复所需的流表项能够被大量规划好的备份路径所重复利用。