%0 Journal Article
%A CHENG Guang
%A GUO Xiao-jun
%A HU Yi-fei
%A WANG Yu-xiang
%T Network Link Fault Diagnosis Based on OpenFlow
%D 2015
%R 10.13190/j.jbupt.2015.05.007
%J Journal of Beijing University of Posts and Telecommunications
%P 42-46,53
%V 38
%N 5
%X <p>To rapidly diagnose and locate link failure in software-defined network (SDN), an OpenFlow based link failure diagnosis mechanism was proposed. Making full use of SDN's feature that the control plane decouple from the data plane, the mechanism collects information from every node in the network using the OpenFlow protocol, and then analyzes the information for topology management, link packet loss, link bandwidth and link congestion to diagnose link failure. Simulation proves that the mechanism can accurately measure link performance metrics; besides, with topology information, link failure can be precisely located.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2015.05.007