On the placement of controllers in software-defined networks

Hu, Yannan; Wang, Wendong; Gong, Xiangyang; Que, Xirong; Cheng, Shiduan

doi:10.1016/s1005-8885(11)60438-x

Cited by 108 publications

(64 citation statements)

References 9 publications

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“…In the efforts to increase the reliability of SDN, Zhang et al [16] propose a mincut based algorithm to minimize the likelihood of loss of connectivity between the controller and switches. Hu et al further [17] study the controller placement problem for reliability and propose a greedy algorithm to achieve an efficient placement and reliability. The general goal of Survivor [18] is to maximize connectivity between forwarding devices and controllers instances.…”

Section: B Increase Reliability and Resiliencementioning

confidence: 99%

An Effective Approach to Controller Placement in Software Defined Wide Area Networks

Wang

Zhao

Huang

et al. 2018

IEEE Trans. Netw. Serv. Manage.

150

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Abstract-One grand challenge in Software Defined Networking (SDN) is to select appropriate locations for controllers to shorten the latency between controllers and switches in wide area networks. In the literature, the majority of approaches are focused on the reduction of packet propagation latency, but propagation latency is only one of the contributors of the overall latency between controllers and their associated switches. In this paper, we explore and investigate more possible contributors of the latency, including the end-to-end latency and the queuing latency of controllers. In order to decrease the end-to-end latency, the concept of network partition is introduced and a Clustering-based Network Partition Algorithm (CNPA) is then proposed to partition the network. The CNPA can guarantee that each partition is able to shorten the maximum end-to-end latency between controllers and switches. To further decrease the queuing latency of controllers, appropriate multiple controllers are then placed in the subnetworks. Extensive simulations are conducted under two real network topologies from the Internet Topology Zoo. The results verify that the proposed algorithm can remarkably reduce the maximum latency between controllers and their associated switches.

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Section: B Increase Reliability and Resiliencementioning

confidence: 99%

An Effective Approach to Controller Placement in Software Defined Wide Area Networks

Wang

Zhao

Huang

et al. 2018

IEEE Trans. Netw. Serv. Manage.

150

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“…The importance of controller placement is well established [1] [8] [9] [10]. In [8] the authors show the implications of changing the number of controllers for the latency between switches and controllers, and [9] develops different algorithms to make placement decisions to maximize the reliability of SDN.…”

Section: B System Designmentioning

confidence: 99%

“…In [8] the authors show the implications of changing the number of controllers for the latency between switches and controllers, and [9] develops different algorithms to make placement decisions to maximize the reliability of SDN. In [10] the authors describe the implications of the controllers view of the local network and discuss the design of a distributed control plane.…”

Section: B System Designmentioning

confidence: 99%

“…Each one of these control layer topologies has implicit limitations. However, regardless of the topology, there are some general aspects, such as the distance both among controller-switches and among controllers, as well as the workload on each controller, that affect the ability of the controllers to respond to network events [9].…”

Section: Principles For Designing the Control Layermentioning

confidence: 99%

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On the controller placement for designing a distributed SDN control layer

Jiménez

Cervelló-Pastor

Garcia

2014

2014 IFIP Networking Conference

133

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Abstract-The software-defined network (SDN) advocates a centralized network control, where a controller manages a network from a global view of the network. Large SDN networks may consist of multiple controllers or controller domains that distribute the network management between them, where each controller has a logically centralized but physically distributed vision of the network. In this context, a key challenge faced by providers is to define a scalable control network that exploits the benefits of SDN when used in conjunction with efficient management strategies. Most of the control layer models proposed are not concerned with controller scalability, because they assume that commercial controllers are scalable in terms of capacity (quantity of flows processed per second). However, it has been demonstrated that overloads and long propagation delays among controllers and controllers-switches can lead to a long response time of the controllers, affecting their ability to respond to network events in a very short time and reducing the reliability of communication.In this work we define the principles for designing a scalable control layer for SDN, and show the desired control layer characteristics that optimize the management of the network. We address these principles from the perspective of the controller placement problem. For this purpose we improve and evaluate our previous approach, the algorithm called k-Critical. K-Critical discovers the minimum number of controllers and their location to create a robust control topology that deals robustly with failures and balances the load among the selected controllers. The results demonstrate the effectiveness of our solution by comparing it with other controller placement solutions.Index Terms-Software-defined network, controller scalability, control layer, controller placement problem.

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“…In [13], the authors have proposed an approach to dynamically determine the number and the location of controllers based on the network conditions. A different objective has been considered in [14] where the goal of the placement is to maximize the reliability in terms of control paths. Their approach assumes that the number of controllers to deploy is given, which may not be easy to determine a priori and is considered as a variable in our work.…”

Section: B Related Workmentioning

confidence: 99%

On the placement of management and control functionality in software defined networks

Tuncer

Charalambides

Clayman

et al. 2015

2015 11th International Conference on Network and Service Management (CNSM)

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Abstract-In order to support reactive and adaptive operations, Software-Defined Networking (SDN)-based management and control frameworks call for decentralized solutions. A key challenge to consider when deploying such solutions is to decide on the degree of distribution of the management and control functionality. In this paper, we develop an approach to determine the allocation of management and control entities by designing two algorithms to compute their placement. The algorithms rely on a set of input parameters which can be tuned to take into account the requirements of both the network infrastructure and the management applications to execute in the network. We evaluate the influence of these parameters on the configuration of the resulting management and control planes based on real network topologies and provide guidelines regarding the settings of the proposed algorithms.

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On the placement of controllers in software-defined networks

Cited by 108 publications

References 9 publications

An Effective Approach to Controller Placement in Software Defined Wide Area Networks

An Effective Approach to Controller Placement in Software Defined Wide Area Networks

On the controller placement for designing a distributed SDN control layer

On the placement of management and control functionality in software defined networks

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