Sentinel: Failure Recovery in Centralized Traffic Engineering
Sentinel: Failure Recovery in Centralized Traffic Engineering
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Sentinel:集中式流量工程中的故障恢复
DOI:
10.1109/tnet.2019.2931473
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发表时间:
2019-08
期刊:
影响因子:
--
通讯作者:
Yanhui Geng
中科院分区:
文献类型:
--
作者:
Jiaqi Zheng;Hong Xu;Xiaojun Zhu;Guihai Chen;Yanhui Geng
Network failures are common in wide area networks (WANs). Failure recovery in a software-defined WAN takes minutes or longer, as the controller needs to calculate a new traffic engineering solution and update the forwarding rules across all switches. This severely degrades application performance. Existing reactive and proactive approaches inevitably lead to transient congestion or bandwidth underutilization and impair the efficiency of running the expensive WANs. We present Sentinel, a novel failure recovery system for traffic engineering in software-defined WANs. Sentinel pre-computes and installs backup tunnels to accelerate failure recovery. When a link fails, switches locally redirect traffic to backup tunnels and recover immediately in the data plane, thus substantially reducing the transient congestion compared to reactive rescaling. On the other hand, Sentinel completely avoids the bandwidth headroom required by existing proactive approaches. Extensive experiments on Mininet and numerical simulations show that similar to state-of-the-art FFC, Sentinel reduces congestion by 45% compared with rescaling, and its algorithm runs much faster than FFC. Sentinel only introduces a small number of additional forwarding rules and can be readily implemented on today’s Openflow switches.
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DOI:
10.1109/tnet.2011.2123916
发表时间:
2011-10
期刊:
IEEE/ACM Transactions on Networking
影响因子:
--
作者:
K. Kwong;Lixin Gao;Roch Guérin;Zhi-Li Zhang
通讯作者:
K. Kwong;Lixin Gao;Roch Guérin;Zhi-Li Zhang
DOI:
10.1145/1328911.1328924
发表时间:
2008-03
期刊:
ACM Trans. Algorithms
影响因子:
--
作者:
George Karakostas
通讯作者:
George Karakostas
DOI:
10.1145/2934872.2934904
发表时间:
2016-08
期刊:
Proceedings of the 2016 ACM SIGCOMM Conference
影响因子:
--
作者:
Xin Jin;Yiran Li;Da Wei;Siming Li;Jie Gao;Lei Xu;Guangzhi Li;W. Xu;J. Rexford
通讯作者:
Xin Jin;Yiran Li;Da Wei;Siming Li;Jie Gao;Lei Xu;Guangzhi Li;W. Xu;J. Rexford
DOI:
10.1109/infocom.2016.7524356
发表时间:
2016-04
期刊:
IEEE INFOCOM 2016 - The 35th Annual IEEE International Conference on Computer Communications
影响因子:
--
作者:
Brent E. Stephens;A. Cox
通讯作者:
Brent E. Stephens;A. Cox
DOI:
10.4230/lipics.icalp.2016.134
发表时间:
2016
期刊:
--
影响因子:
--
作者:
Marco Chiesa;A. Gurtov;A. Madry;Slobodan Mitrovic;Ilya Nikolaevskiy;Michael Schapira;S. Shenker
通讯作者:
Marco Chiesa;A. Gurtov;A. Madry;Slobodan Mitrovic;Ilya Nikolaevskiy;Michael Schapira;S. Shenker