SDN-based Overlay Networks for QoS-aware Routing

Belzarena, Pablo; Sena, Gabriel Gómez; Amigo, Isabel; Vaton, Sandrine

doi:10.1145/2940116.2940121

Cited by 11 publications

(12 citation statements)

References 11 publications

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“…Examples are [23], which responds to the many BGP problems by adding an Internet-scale controller, or the well known B4 network from Google [24], which showcases a SDN implementation at a worldwide scale. Even more recently, inter-datacenter connection under the SDN paradigm was studied in [25], which seeks for resiliency, in [26] which focuses on a cognitive approach for routing decisions, as well as in [27] which discusses an architecture for inter-datacenter QoS-aware routing.…”

Section: Implementation Frameworkmentioning

confidence: 99%

“…In particular, the standardized OpenFlow protocol can fulfill such programming task. This architecture has been presented in more details in [27].…”

Section: Implementation Frameworkmentioning

confidence: 99%

“…However, this approach has some inaccuracies. Another approach is to allow the centralized application to ask a probe packets generator to inject measurements packets to the SDN network and program the SDN switches to properly forward these packets and collect the measurements [27].…”

Section: Implementation Frameworkmentioning

confidence: 99%

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Joint Minimization of Monitoring Cost and Delay in Overlay Networks: Optimal Policies with a Markovian Approach

et al. 2018

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Continuous monitoring of network resources enables to make more-informed resource allocation decisions but incurs overheads. We investigate the trade-off between monitoring costs and benefits of accurate state information for a routing problem. In our approach link delays are modeled by Markov chains or hidden Markov models. The current delay information on a link can be obtained by actively monitoring this link at a fixed cost. At each time slot, the decision maker chooses to monitor a subset of links with the objective of minimizing a linear combination of long-run average delay and monitoring costs. This decision problem is modeled as a Markov Decision Process whose solution is computed numerically. In addition, in simple setttings we prove that immediate monitoring cost and delay minimization leads to a threshold policy on a filter which sums up information from past measurements. The lightweight method as well as the optimal policy are tested on several use-cases. We demonstrate on an overlay of 30 nodes of RIPE Atlas that we obtain delay values close to the performance of the always best path with an extremely low monitoring effort when delays between nodes are modeled with hierarchical Dirichlet process hidden Markov models.

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Section: Implementation Frameworkmentioning

confidence: 99%

“…In particular, the standardized OpenFlow protocol can fulfill such programming task. This architecture has been presented in more details in [27].…”

Section: Implementation Frameworkmentioning

confidence: 99%

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Joint Minimization of Monitoring Cost and Delay in Overlay Networks: Optimal Policies with a Markovian Approach

et al. 2018

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“…To fill this gap, and thanks to the new opportunities the SDN paradigm offers, we have proposed, in [2], an SDNbased architecture to allow QoS-aware and reliable routing in overlay networks. This solution leverages three key features of SDN: 1) a virtually centralized view of the architecture, in order to efficiently perform smart monitoring and routing decisions, 2) a fine-grained, flow-based forwarding capability, 3) a decoupled data and control plane interfaced through a standardized protocol (OpenFlow).…”

Section: Introductionmentioning

confidence: 99%

“…ONs are OpenFlowcapable switches and are interconnected among them through the Internet, constituting the overlay network. We briefly describe the main key functionalities of the system, while reader is referred to our previous work [2] for more details. TEApp computes the best paths according to some QoS metrics (e.g delay).…”

Section: Introductionmentioning

confidence: 99%

An SDN-Based Approach for QoS and Reliability in Overlay Networks

Amigo

Sena

Chami

et al. 2018

2018 Network Traffic Measurement and Analysis Conference (TMA)

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Software‐defined networking security for private data center networks and clouds: Vulnerabilities, attacks, countermeasures, and solutions

Abdelrahman

Rodrigues

Mahmoud

et al. 2020

Int J Communication

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Software-defined networking (SDN) is an agile, modern networking approach that facilitates innovations in the networking paradigm. The abstracted and centralized network operating system facilitates the network management and reduces operational expenditure (OPEX). The open nature and simplicity of the data-forwarding plane dramatically reduces capital expenditure (CAPEX) by leveraging commodity servers and switches. SDN also lends itself very well to address major cloud computing issues and complement cloud services, especially in terms of network virtualization and networking as a service (NaaS).As a new technology, SDN does involve certain security challenges, which include distributed denial of service (DDoS) threats, build and run time injected malware, insider (tenant) attacks, and security holes resulting from controller misconfigurations. These are severe threats that can cripple an entire network. It is crucial to address the SDN vulnerabilities to ensure its successful deployment in private data center networks, on cloud platforms and beyond. Some security solutions leverage the built-in features of SDN, such as its controller software component, while other solutions provide external SDN applications running above the controller. This study reviews the security solutions for the vulnerabilities of state-of-the-art SDN controllers and the available countermeasures. Furthermore, an in-depth analysis of the SDN features that support security is presented, and some unresolved research issues on SDN controllers are identified.

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SDN-based Overlay Networks for QoS-aware Routing

Cited by 11 publications

References 11 publications

Joint Minimization of Monitoring Cost and Delay in Overlay Networks: Optimal Policies with a Markovian Approach

Joint Minimization of Monitoring Cost and Delay in Overlay Networks: Optimal Policies with a Markovian Approach

An SDN-Based Approach for QoS and Reliability in Overlay Networks

Software‐defined networking security for private data center networks and clouds: Vulnerabilities, attacks, countermeasures, and solutions

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