一种通用的混合IP/SDN网络互联架构

General Interconnecting Architecture of Hybrid IP/SDN Network

针对传统IP网络与SDN网络的互通问题,提出一种路由器层叠软件定义网络(SDN)架构.将SDN网络内所有交换机虚拟为一台虚拟路由器,通过虚拟路由器与传统网络进行协议互联.提出一种聚合流表拆分算法,将传统路由拆分为若干流表,实现传统路由在SDN网络中的动态发布.同时,按需动态地利用路由重发布将SDN主机网络扩散到传统网络.通过在仿真环境下的实验验证,该方法能够动态实现路由与流表的相互转化和自动发布,且与路由协议类型无关,是一种通用的可扩展的混合IP/SDN网络互联架构.

In view of the interworking between traditional IP network and SDN network, a framework of router overlay software definition network(SDN) is proposed. All the switches in the SDN network are virtualized as a virtual router, and the virtual router is interconnected with the traditional network. An aggregated flow table splitting algorithm is proposed, which divides the traditional route into several flow tables to realize the dynamic distribution of the traditional route in the SDN network. At the same time, SDN host networks are dynamically distributed to the traditional network with route redistribution. Through the experimental verification in the simulation environment, this method can dynamically realize the mutual conversion and automatic distribution of routing and flow table, and it is a general and extensible hybrid SDN network interconnection architecture independent of the routing protocol type.