Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2015, Vol. 38 ›› Issue (5): 42-46,53.doi: 10.13190/j.jbupt.2015.05.007

• Papers • Previous Articles     Next Articles

Network Link Fault Diagnosis Based on OpenFlow

CHENG Guang, WANG Yu-xiang, HU Yi-fei, GUO Xiao-jun   

  1. 1. School of Computer Science and Engineering, Southeast University, Nanjing 211189, China;
    2. Key Laboratory of Computer Network and Information Integration (Southeast University), Ministry of Education, Nanjing 211189, China
  • Received:2014-12-10 Online:2015-10-28 Published:2015-10-28

Abstract:

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.

Key words: fault diagnosis, fault location, topology management, OpenFlow

CLC Number: