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Regional Congestion Mitigation in Lossless Datacenter Networks

Abstract : To stop harmful congestion spreading, lossless network needs much faster congestion detection and reaction than the end-to-end approach. In this paper, we propose a switch-level regional congestion mitigation mechanism (RCM) that performs traffic management just at the congestion region edge. RCM moves the end-to-end congestion control to hop-by-hop switch level to lower the congested region’s load as fast as possible. Meanwhile, to handle longer congestion, RCM detours the non-congestion flows to a light-loaded available path based on regional congestion degree to avoid the congestion region. Evaluation shows that the proposed RCM mechanism can perform timely congestion control over microburst flows, and achieve >10% improvement on mice flow’s FCT and throughput than DCQCN, with rarely performance reduction on elephant flows.
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https://hal.inria.fr/hal-01705435
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Submitted on : Friday, February 9, 2018 - 2:25:45 PM
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Xiaoli Liu, Fan Yang, Yanan Jin, Zhan Wang, Zheng Cao, et al.. Regional Congestion Mitigation in Lossless Datacenter Networks. 14th IFIP International Conference on Network and Parallel Computing (NPC), Oct 2017, Hefei, China. pp.62-74, ⟨10.1007/978-3-319-68210-5_6⟩. ⟨hal-01705435⟩

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