论文部分内容阅读
为了实现对软件定义网络(SDN)环境下链路故障的快速诊断及定位,提出了一种基于Open Flow的链路故障诊断机制.利用SDN控制平面与转发平面分离的特性,使用SDN南向接口协议——Open Flow对网络各个节点进行信息采集,从拓扑管理、链路丢包、链路带宽、链路拥塞4个方面进行链路故障的诊断.实验结果表明,该方法能够准确获取网络链路的性能参数.此外,结合网络拓扑信息,能够对网络故障点进行精确的定位.
In order to quickly diagnose and locate the link faults in Software Defined Network (SDN) environment, an Open Flow-based link fault diagnosis mechanism is proposed.Using the characteristics of SDN control plane and forwarding plane separation, SDN southbound interface Protocol - Open Flow collects information from each node in the network, and diagnoses the link failures from four aspects: topology management, packet loss, link bandwidth and link congestion.The experimental results show that this method can accurately obtain network links Road performance parameters.In addition, combined with the network topology information, the network can accurately locate the point of failure.