標題: A QoS-aware routing in SDN hybrid networks
作者: Lin, Chienhung
Wang, Kuochen
Deng, Guocin
資訊工程學系
Department of Computer Science
關鍵字: Data center;hybrid network;QoS-aware;routing;SDN
公開日期: 1-Jan-2017
摘要: Changing the whole network into a software defined network (SDN) is impractical due to high replacement cost. Therefore, there exist SDN hybrid networks, where SDN switches and legacy switches coexist at the same time. In this paper, we propose an SDN hybrid network architecture which can discover existence of legacy switches by using the Spanning Tree Protocol and thus have a global view of the SDN hybrid network. We also enable OpenFlow switches to cooperate with legacy switches by using the Learning Bridge Protocol without requiring any modification on legacy switches. By utilizing the characteristics of SDN, SDN applications can dynamically find routing paths according to pre-defined QoS requirements and current network status. We also propose a simulated annealing based QoS-aware routing (SAQR) algorithm which can adaptively adjust weights of delay, loss rate and bandwidth requirements in a cost function to find the best fit path according to QoS requirements. We evaluate the proposed SAQR in a simulated SDN hybrid network which runs applications with different QoS requirements. Simulation results show that the SAQR performs better than related work MINA in terms of the fitness ratios of delay, loss rate and bandwidth, with 88%, 90.8% and 86.5% of flows meeting their respective QoS requirements, in contrast to MINA, with only 63%, 82.4% and 87.5% of flows meeting their respective QoS requirements. (C) 2017 The Authors. Published by Elsevier B.V.
URI: http://dx.doi.org/10.1016/j.procs.2017.06.091
http://hdl.handle.net/11536/146883
ISSN: 1877-0509
DOI: 10.1016/j.procs.2017.06.091
期刊: 14TH INTERNATIONAL CONFERENCE ON MOBILE SYSTEMS AND PERVASIVE COMPUTING (MOBISPC 2017) / 12TH INTERNATIONAL CONFERENCE ON FUTURE NETWORKS AND COMMUNICATIONS (FNC 2017) / AFFILIATED WORKSHOPS
Volume: 110
起始頁: 242
結束頁: 249
Appears in Collections:Conferences Paper


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