Adaptive Distributed Software Defined Networking
Adaptive Distributed Software Defined Networking
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自适应分布式软件定义网络
DOI:
10.1016/j.comcom.2016.11.009
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发表时间:
2017-04
期刊:
影响因子:
--
通讯作者:
Yong Jiang
中科院分区:
文献类型:
--
作者:
Yanyu Chen;Yuan Yang;Qi Li;Yong Jiang
Distributed Software Defined Networking (SDN) federates multiple controllers in a network to solve the problems in single controller networks, e.g., to improve network reliability and reduce the delay between controllers and switches. However, in the current distributed SDN schemes, the mapping between SDN switches and controllers is statically configured, which may result in uneven load distribution among controllers. These schemes cannot fully benefit from the distributed SDN architecture. In order to address this issue, this paper proposes ESDN, anadaptive elastic distributed SDN architecture. The architecture dynamically selects a minimum number of active controllers that switches attached to, and changes the mapping between switches and controllers according to the network load. Specially, a switch can migrate from one controller domain to another so that the mapping is adaptive to the network load. We formalize the controller selection problem as an optimization problem, and prove that the problem is NP-Hard. We solve the problem by using offline and online algorithms, respectively. With the heuristics, controllers in a network are dynamically changed with respect to the network load. The offline algorithm has an approximation ratio of 2 related to the optimal result, and the online algorithms can find similar number of active controllers within a shorter time. We validate the algorithms and evaluate the performance by simulations. In particular, the number of inactive controllers computed by shrinking action of online algorithm averagely achieves around 92% of the optimal values when the whole network load decreases from 65% controller capacity to 25% controller capacity.
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DOI:
10.1145/2535771.2535789
发表时间:
2013-11
期刊:
Proceedings of the Twelfth ACM Workshop on Hot Topics in Networks
影响因子:
--
作者:
Matthew Monaco;Oliver Michel;Eric Keller
通讯作者:
Matthew Monaco;Oliver Michel;Eric Keller
DOI:
10.1145/2491185.2491198
发表时间:
2013-08
期刊:
--
影响因子:
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作者:
S. Schmid;J. Suomela
通讯作者:
S. Schmid;J. Suomela
DOI:
--
发表时间:
--
期刊:
--
影响因子:
--
作者:
通讯作者:
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DOI:
10.1145/2491185.2491189
发表时间:
2013-08
期刊:
--
影响因子:
--
作者:
David Erickson
通讯作者:
David Erickson
DOI:
10.1145/2491185.2491194
发表时间:
2013-08
期刊:
--
影响因子:
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作者:
Laurent Vanbever;Joshua Reich;Theophilus A. Benson;Nate Foster;J. Rexford
通讯作者:
Laurent Vanbever;Joshua Reich;Theophilus A. Benson;Nate Foster;J. Rexford