Research Article
Latency-Aware Reliable Controller Placements in SDNs
@INPROCEEDINGS{10.1007/978-3-319-66628-0_15, author={Yuqi Fan and Yongfeng Xia and Weifa Liang and Xiaomin Zhang}, title={Latency-Aware Reliable Controller Placements in SDNs}, proceedings={Communications and Networking. 11th EAI international Conference, ChinaCom 2016 Chongqing, China, September 24-26, 2016, Proceedings, Part II}, proceedings_a={CHINACOM}, year={2017}, month={10}, keywords={SDN Multiple controller placements A single link failure The latency Placement algorithms}, doi={10.1007/978-3-319-66628-0_15} }- Yuqi Fan
Yongfeng Xia
Weifa Liang
Xiaomin Zhang
Year: 2017
Latency-Aware Reliable Controller Placements in SDNs
CHINACOM
Springer
DOI: 10.1007/978-3-319-66628-0_15
Abstract
Most existing research on controller placement in Software-Defined Networking (SDN) investigated controller placements without jointly taking into account both the communication reliability and the communication latency between controllers and switches if any link in the network fails. In this paper, we first introduce a new latency metric that considers the communication delay between the switches and the controllers with and without the single-link-failure. We then formulate a novel SDN controller placement problem with the aim to minimize the communication delay, for which we propose an efficient algorithm. We also show that there is a non-trivial trade-off between a primary path and its backup path in terms of communication delay. We finally conduct experiments through simulations. Experimental results demonstrate that the proposed algorithm is very promising.