摘要：【中文】本发明提出了一种SDN带内控制网络的流表数量优化方法，该方法将网络中的交换机分组，每个组分配一个特定标签标识，通过把流表的匹配域由IP地址改为标签，实现控制网络的标签转发，减少了带内控制网络的流表数量。SDN带内控制网络的流表数量优化方法主要由分组算法模块、标签分配模块、标签转发模块组成，分组算法模块依据距控制器的跳数实现交换机的分组，标签分配模块根据分组情况为每一个分组分配标签，标签转发模块生成标签转发用的流表。本发明解决了大规模网络中控制流流表过多的问题，提高了交换机流表资源的使用效率。 【EN】The invention provides a flow table quantity optimization method of an SDN in-band control network, which groups switches in the network, allocates a specific label identifier for each group, changes an IP address of a matching domain of a flow table into a label, realizes label forwarding of the control network, and reduces the flow table quantity of the in-band control network. The flow table quantity optimization method of the SDN in-band control network mainly comprises a grouping algorithm module, a label distribution module and a label forwarding module, wherein the grouping algorithm module realizes grouping of switches according to the hop number from a controller, the label distribution module distributes labels to each group according to the grouping condition, and the label forwarding module generates a flow table for label forwarding. The invention solves the problem of excessive control flow tables in a large-scale network and improves the use efficiency of switch flow table resources.