SDN: Evolution and Opportunities in the Development IoT Applications

Caraguay, Ángel Leonardo Valdivieso; Peral, Alberto Benito; López, Lorena Isabel Barona; Villalba, Luis Javier García

doi:10.1155/2014/735142

Cited by 90 publications

(50 citation statements)

References 35 publications

(53 reference statements)

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“…One important future approach to deal with real challenges is the adoption of a continuous adaptive risk and trust assessment, which allows real-time decision-making with adaptive responses [49]. Furthermore, the adoption of Software-Defined System (SDSys) is an approach to reduce the overhead in the control and management operations of complex computing systems such as Software-Defined Networking (SDN), proposed to eliminate the rigidity present in traditional networks [50]. It allows the softwarization of IoT infrastructure to improve the sensor networks’ agility and flexibility.…”

Section: Final Considerations and Discussionmentioning

confidence: 99%

An Ontology-Based Cybersecurity Framework for the Internet of Things

Mozzaquatro

Agostinho

Gonçalves

et al. 2018

Sensors

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The use of sensors and actuators as a form of controlling cyber-physical systems in resource networks has been integrated and referred to as the Internet of Things (IoT). However, the connectivity of many stand-alone IoT systems through the Internet introduces numerous cybersecurity challenges as sensitive information is prone to be exposed to malicious users. This paper focuses on the improvement of IoT cybersecurity from an ontological analysis, proposing appropriate security services adapted to the threats. The authors propose an ontology-based cybersecurity framework using knowledge reasoning for IoT, composed of two approaches: (1) design time, which provides a dynamic method to build security services through the application of a model-driven methodology considering the existing enterprise processes; and (2) run time, which involves monitoring the IoT environment, classifying threats and vulnerabilities, and actuating in the environment ensuring the correct adaptation of the existing services. Two validation approaches demonstrate the feasibility of our concept. This entails an ontology assessment and a case study with an industrial implementation.

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Section: Final Considerations and Discussionmentioning

confidence: 99%

An Ontology-Based Cybersecurity Framework for the Internet of Things

Mozzaquatro

Agostinho

Gonçalves

et al. 2018

Sensors

View full text Add to dashboard Cite

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“…First, it proposes the decoupling between the control plane and the data plane. 24 This allows each of the two separated fields to be developed independently, enabling evolution and innovation in both planes. The control plane logic is removed from the forwarding devices (switches and routers) that participate in the network and is incorporated into an external entity that instructs them and is denoted as the SDN controller.…”

Section: Prerequisitesmentioning

confidence: 99%

Improving networked music performance systems using application‐network collaboration

Lakiotakis

Liaskos

Dimitropoulos

2018

Concurrency and Computation

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Summary Networked Music Performance (NMP) systems involve musicians located in different places who perform music while staying synchronized via the Internet. The maximum end‐to‐end delay in NMP applications is called Ensemble Performance Threshold (EPT) and should be less than 25 milliseconds. Due to this constraint, NMPs require ultra–low‐delay solutions for audio coding, network transmission, relaying, and decoding, each one a challenging task on its own. There are two directions for study in the related work referring to the NMP systems. From the audio perspective, researchers experiment on low‐delay encoders and transmission patterns, aiming to reduce the processing delay of the audio transmission, but they ignore the network performance. On the other hand, network‐oriented researchers try to reduce the network delay, which contributes to reduced end‐to‐end delay. In our proposed approach, we introduce an integration of dynamic audio and network configuration to satisfy the EPT constraint. The basic idea is that, the major components participating in an NMP system, the application and the network interact during the live music performance. As the network delay increases, the network tries to equalize it by modifying the routing behavior using Software‐Defined Networking principles. If the network delay exceeds a maximum affordable threshold, the network reacts by informing the application to change the audio processing pattern to overcome the delay increase, resulting in below EPT end‐to‐end delay. A full prototype of the proposed system was implemented and extensively evaluated in an emulated environment.

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“…Therefore, this centralized controller does not require individual configuration of network devices since every network behaviour is managed through the controller. Applicability in fields such as home networking, research campus, data centers, Internet of Things (IoT) among others [4] is carried out by SDN and managed by the OpenFlow [5,6] protocol. This protocol is the most extended in SDN and its maintenance and specification are the responsibility of the Open Networking Foundation-ONF [7].…”

Section: Software Defined Networking and Openflow Protocolmentioning

confidence: 99%

Clustering and Flow Conservation Monitoring Tool for Software Defined Networks

Fernández

Villalba

Kim

2018

Sensors

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Prediction systems present some challenges on two fronts: the relation between video quality and observed session features and on the other hand, dynamics changes on the video quality. Software Defined Networks (SDN) is a new concept of network architecture that provides the separation of control plane (controller) and data plane (switches) in network devices. Due to the existence of the southbound interface, it is possible to deploy monitoring tools to obtain the network status and retrieve a statistics collection. Therefore, achieving the most accurate statistics depends on a strategy of monitoring and information requests of network devices. In this paper, we propose an enhanced algorithm for requesting statistics to measure the traffic flow in SDN networks. Such an algorithm is based on grouping network switches in clusters focusing on their number of ports to apply different monitoring techniques. Such grouping occurs by avoiding monitoring queries in network switches with common characteristics and then, by omitting redundant information. In this way, the present proposal decreases the number of monitoring queries to switches, improving the network traffic and preventing the switching overload. We have tested our optimization in a video streaming simulation using different types of videos. The experiments and comparison with traditional monitoring techniques demonstrate the feasibility of our proposal maintaining similar values decreasing the number of queries to the switches.

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SDN: Evolution and Opportunities in the Development IoT Applications

Cited by 90 publications

References 35 publications

An Ontology-Based Cybersecurity Framework for the Internet of Things

An Ontology-Based Cybersecurity Framework for the Internet of Things

Improving networked music performance systems using application‐network collaboration

Clustering and Flow Conservation Monitoring Tool for Software Defined Networks

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