An Overview on SDN Architectures with Multiple Controllers

Blial, Othmane; Mamoun, Mouad Ben; Benaini, Rédouane

doi:10.1155/2016/9396525

Cited by 122 publications

(73 citation statements)

References 11 publications

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“…In addition, the control plane consists of one layer, and each controller has the same responsibilities at the same time and has a partial view of its network. In a hierarchical or vertical architecture, the SDNcontrollers are located vertically (20) .…”

Section: Figure 7 Dijkstra Algorithm With Two Controllermentioning

confidence: 99%

Software Defined Network of Video Surveillance System Based on Enhanced Routing Algorithms

Salman

2020

Baghdad Sci.J

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Software Defined Network (SDN) is a new technology that separate the control plane from the data plane. SDN provides a choice in automation and programmability faster than traditional network. It supports the Quality of Service (QoS) for video surveillance application. One of most significant issues in video surveillance is how to find the best path for routing the packets between the source (IP cameras) and destination (monitoring center). The video surveillance system requires fast transmission and reliable delivery and high QoS. To improve the QoS and to achieve the optimal path, the SDN architecture is used in this paper. In addition, different routing algorithms are used with different steps. First, we evaluate the video transmission over the SDN with Bellman Ford algorithm. Then, because the limitation of Bellman ford algorithm, the Dijkstra algorithm is used to change the path when a congestion occurs. Furthermore, the Dijkstra algorithm is used with two controllers to reduce the time consumed by the SDN controller. POX and Pyretic SDN controllers are used such that POX controller is responsible for the network monitoring, while Pyretic controller is responsible for the routing algorithm and path selection. Finally, a modified Dijkstra algorithm is further proposed and evaluated with two controllers to enhance the performance. The results show that the modified Dijkstra algorithm outperformed the other approaches in the aspect of QoS parameters.

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Section: Figure 7 Dijkstra Algorithm With Two Controllermentioning

confidence: 99%

Software Defined Network of Video Surveillance System Based on Enhanced Routing Algorithms

Salman

2020

Baghdad Sci.J

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“…A proper controller functionality manages the control logic of its associated switches. e latest versions of OpenFlow protocols support a masterslave configuration at the control layer in order to increase the overall resiliency [6,7,8].…”

Section: Openflow Fault-tolerance Support In Sdnmentioning

confidence: 99%

“…is eases the packet forwarding capabilities based on the network needs [1]. Management of the communication between the controllers and the switches is governed through OpenFlow standard [6,7,8]. OpenFlow manages and controls the communication flow between the controller and network entities [9].…”

Section: Introductionmentioning

confidence: 99%

“…SDN has many multicontroller architectures. Bilal et al [6] described different types of SDN architecture and their associated implementations. e authors classify multicontroller SDN architecture in two broad categories: (1) logically centralized where there is a super controller and a set of slave controllers and (2) logically distributed architectures where there is a set of slave controllers that communicate through message passing.…”

Section: Introductionmentioning

confidence: 99%

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Generic Controller Adaptive Load Balancing (GCALB) for SDN Networks

Aly

2019

Journal of Computer Networks and Communications

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Fault tolerance is an important aspect of network resilience. Fault-tolerance mechanisms are required to ensure high availability and high reliability in different environments. e beginning of software-defined networking (SDN) has both presented new challenges and opened a new era to develop new strategies, standards, and architectures to support fault tolerance. In this paper, a study of fault tolerance is performed for two architectures: (1) a single master with multiple slave controllers and (2) multiple slave controllers. e proposed model is called a Generic Controller Adaptive Load Balancing (GCALB) model for SDNs. GCALB adapts the load among slave controllers based on a GCALB algorithm. Mininet simulation tool is utilized for the experimentation phase. Controllers are implemented using floodlights. Experiment results were conducted using GCALB when master controller is taking the responsibility of distributing switches among four and five slave controllers as a case study. roughput and response time metrics are used to measure performance. GCALB is compared with two reference algorithms: (1) HyperFlow (Kreutz et al., 2012), and (2) Enhanced Controller Fault Tolerant (ECFT) (Aly and Al-anazi, 2018). Results are promising as the performance of GCALB increased by 15% and 12% when compared to HyperFlow and by 13% and 10% when compared to ECFT in terms of throughput and response time.

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“…To deploy the SDN architecture it is necessary to replace all the current network architecture by SDN nodes which it's very difficult. So to remedy this problem researches [7] proposed the use of hybrid SDN architecture.…”

Section: Hybrid Distributed Sdn Architecturesmentioning

confidence: 99%

A centralized secure plan for detecting and mitigation incidents in hybrid SDN

2018

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Abstract. The information technology sector has experienced phenomenal growth during recent years. To follow this development many new technologies have emerged to satisfy the expectations of businesses and customers, such as Cloud Computing, mobility, virtualization, Internet of things and big data. Traditional network cannot longer support this growth and suffers more and more in terms of misconfiguration, management and configurations complexity. Software defined network (SDN) architectures can be considered as a big revolution in the field of computer networks, because they offer a centralized control on infrastructure, services and the applications deployed which facilitate configuration and management on the network. The implementation of this type of architecture is not obvious and requires great expertise and good handling and management of network equipment. To remedy this problem the SDN architectures have evolved towards distributed and hybrid architectures. Despites the advantages of using SDN, security issues remain a real obstacle in front of the deployment of this type of architecture. The centralized architecture of this type of networks makes it vulnerable to several types of attacks and intrusions, and the implementation of security equipment generally causes a decrease in performance and increase latency.

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An Overview on SDN Architectures with Multiple Controllers

Cited by 122 publications

References 11 publications

Software Defined Network of Video Surveillance System Based on Enhanced Routing Algorithms

Software Defined Network of Video Surveillance System Based on Enhanced Routing Algorithms

Generic Controller Adaptive Load Balancing (GCALB) for SDN Networks

A centralized secure plan for detecting and mitigation incidents in hybrid SDN

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