Optimal Model for the Controller Placement Problem in Software Defined Networks

Sallahi, Afrim; St-Hilaire, Marc

doi:10.1109/lcomm.2014.2371014

Cited by 193 publications

(88 citation statements)

References 5 publications

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“…The network cost is composed of the deployment cost and energy consumption. In order to formulate the deployment cost, authors of [22] develop an optimal model and the overall energy consumption is reduced according to their simulation. The main challenge of this model is its big complexity, e.g., some of the calculations cannot be achieved within 30 hours.…”

Section: Reduce Deployment Cost and Energy Consumptionmentioning

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.

149

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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: Reduce Deployment Cost and Energy Consumptionmentioning

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.

149

View full text Add to dashboard Cite

show abstract

“…LiDy+ does not only provide the minimum number of controllers and maximum controller utilization but also takes less energy consumption and maintenance costs as compared to LiDy. Both schemes provide better results as compared to previous studies . In previous research work, controllers were deployed only to switch locations, but here, the authors' aim is to deploy the controller in a location other than of the switch locations so that the propagation latency gets reduced.…”

Section: Controller Placement Problemmentioning

confidence: 93%

“…A mathematical model for optimal controller placement is proposed by Sallahi and St‐Hilaire . Controllers and links can be activated or deactivated to enhance the performance of the network.…”

Section: Controller Placement Problemmentioning

confidence: 99%

“…This technique improves the QoS and also minimizes the deployment cost of the controllers. Both Sallahi and St‐Hilaire and Rath et al have considered propagation latency between the switches and controllers and traffic load of the switches as an input for placement of controllers. Both research works are limited to small‐sized networks.…”

Section: Controller Placement Problemmentioning

confidence: 99%

“…A mathematical model for optimal controller placement is proposed by Sallahi and St-Hilaire. 27 Controllers and links can be activated or deactivated to enhance the performance of the network. They find an optimal number of controllers, locations where controllers should be placed and the kind of controllers.…”

Section: Dynamic Traffic-aware Ccppmentioning

confidence: 99%

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A survey and classification of controller placement problem in SDN

2018

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Summary Software defined networking emerges as a promising paradigm shift that decouples the control plane from the data plane. It has the ability to centrally monitor and control the network through softwarization, ie, controller. Deploying a single controller is inefficient to handle large network traffic; thereby, making multiple controllers are a necessity of current software defined networking in wide area networks. Placing multiple controllers in an optimum way, ie, controller placement is a vibrant research problem. Controller placement problem (CPP) is of twofold: the minimum number of controllers to be placed in a network and locations of these controllers. Numerous researchers in the last 5 years (2012 to November 2017) have proposed solutions for the CPP, which is an NP‐hard problem. In general, solutions are based on objective functions and their optimum solutions considering various factors (such as propagation latency between switches and controllers, and intercontrollers) and constraints (such as the capacity of controllers and switches). To the best of our knowledge, this is the first attempt of state‐of‐the‐art review on CPP. This paper classifies the CPP, critically analyzes the existing solutions, and finds limitations and future scope existing, which will help potential researchers in this area to innovate new solutions for CPP lying on this information.

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An Analysis ofSDNControllers Software

Hu¹,

Peng²,

Hu³

2019

Wiley 5G Ref

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Multi‐controllers can effectively improve the scalability and stability of the control plane in software‐defined networking (SDN) and is becoming a promising solution in large‐scale networks. In this article, we present a research survey for multi‐controller SDN control plane. We categorize the multi‐controller research into two aspects: homogeneous control plane and heterogeneous control plane. For homogeneous control plane, the network uses multiple same types of controllers to achieve the integrative control of the network. The homogeneous structure provides convenience for unified management and maintenance, but poses four critical problems: extending the number of controllers; processing load variance resulting in load imbalance on controllers; unreasonable placement causing low availability; conflicting strategy going against consistency. Heterogeneous multi‐controller SDN control plane that employs different types of controllers has been recently proposed to improve the utilization of control resource and the operation security of control plane. However, due to the increasing number of backdoors and various programming languages, the heterogeneous structure suffers from diverse vulnerabilities and incompatibility problems of different types of controllers. Thus, security and convergence of heterogeneous controllers become two important research topics. We present the research challenges and existing solutions of the aforementioned problems and further propose some promising future researches.

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Optimal Model for the Controller Placement Problem in Software Defined Networks

Cited by 193 publications

References 5 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

A survey and classification of controller placement problem in SDN

An Analysis ofSDNControllers Software

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