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Controller Placements for Improving Flow Set-Up Reliability of Software-Defined Networks
Software-defined networking (SDN) is a new networking paradigm that decouples control plane from the data plane. A switch in the data plane device sends a flow set-up request to the controller, a device in the control plane, upon the arrival of an unknown flow. The controller responds the request with a flow entry to be installed in the flow table of the switch. Link failures can cause disconnections between switches and controllers. Most existing research on controller placement in SDNs investigated controller placements without considering single-link-failure impact on the number of dropped flow set-up requests in SDNs. In this paper, we formulate a novel SDN controller placement problem with the aim to minimize the average number of dropped flow set-up requests due to the single-link-failure. We propose two efficient algorithms for multiple-controller placements. The simulation results demonstrate that the proposed algorithms achieve competitive performance in terms of average number of dropped flow set-up requests under single-link-failure and average latency of flow set-up requests.
Controller Placements for Improving Flow Set-Up Reliability of Software-Defined Networks
Software-defined networking (SDN) is a new networking paradigm that decouples control plane from the data plane. A switch in the data plane device sends a flow set-up request to the controller, a device in the control plane, upon the arrival of an unknown flow. The controller responds the request with a flow entry to be installed in the flow table of the switch. Link failures can cause disconnections between switches and controllers. Most existing research on controller placement in SDNs investigated controller placements without considering single-link-failure impact on the number of dropped flow set-up requests in SDNs. In this paper, we formulate a novel SDN controller placement problem with the aim to minimize the average number of dropped flow set-up requests due to the single-link-failure. We propose two efficient algorithms for multiple-controller placements. The simulation results demonstrate that the proposed algorithms achieve competitive performance in terms of average number of dropped flow set-up requests under single-link-failure and average latency of flow set-up requests.
Controller Placements for Improving Flow Set-Up Reliability of Software-Defined Networks
Stud. in Distributed Intelligence
Yuan, Xiaohui (editor) / Elhoseny, Mohamed (editor) / Fan, Yuqi (author) / Ouyang, Tao (author) / Yuan, Xiaohui (author)
2020-06-26
11 pages
Article/Chapter (Book)
Electronic Resource
English
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