Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2016, Vol. 39 ›› Issue (3): 54-59.doi: 10.13190/j.jbupt.2016.03.009

• Papers • Previous Articles     Next Articles

Multi-Directional Searching Based Consistent Flow Updating Scheme in Software Defined Networking

LIU Jiang, HU Xiao-lu, HUANG Tao, LIU Yun-jie   

  1. 1. Beijing Laboratory of Advanced Information Networks, Beijing University of Posts and Telecommunications, Beijing 100876, China;
    2. Beijing Advanced Innovation Center for Future Internet Technology, Beijing 100124, China
  • Received:2015-11-30 Online:2016-06-28 Published:2016-06-27

Abstract:

The flow table updating with loop-free consistence is one of the most important issues in software defined networking (SDN), in which, the optimal scheme has high computing complexity, while the single/double directional updating schemes have low computing complexity, however, the length of dependency chain is difficult to be optimized. The article presents a consistent flow update scheme based on multi-directional searching. The scheme was proved loop-free consistent. Simulation shows that the scheme shortens the length of dependency chain, closes to the optimal scheme and effectively reduces the working load on controller.

Key words: software defined networking, flow update, loop-freedom, consistency

CLC Number: