Short-Sighted Routing, or When Less is More

Martins, J. Legatheaux; Campos, Nelson

doi:10.1109/mcom.2016.7588274

Cited by 10 publications

(4 citation statements)

References 11 publications

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“…The emergence of Software Defined Networking (SDN) redefined the traditional network architecture by separating the control plane from the data plane. This created opportunity to implement more sophisticated TE techniques, since SDN controller is able to continuously track the network state and reconfigure the data-plane dynamically [1][2][3][4][5][6][7]. In order to ensure an optimal network operation and meet QoS requirements, SDN controller must respond to the network events (e.g.…”

Section: Introductionmentioning

confidence: 99%

Dynamic optimization of load-balancing and reconfiguration overhead in SD-ISP networks

Tomović¹,

Radusinović²

2019

Telfor J

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In this paper, we propose a new traffic engineering (TE) approach for software-defined Internet Service Provider (SD-ISP) networks that strives to maximize the network throughput and provide adequate QoS (Quality of Service) with a minimal reconfiguration cost. In contrast to the conventional TE approaches, which perform the network optimizations periodically and control the side effects of reconfigurations by carefully choosing the period length between the optimization cycles, we use a bi-objective optimization model that minimizes maximum link utilization and the reconfiguration overhead. A new heuristic algorithm has been proposed in order to generate the approximated Pareto frontier for the bi-objective optimization model, while the Lyapunov drift-plus-penalty algorithm is used to select the most appropriate solution from the approximated Pareto set. Our simulation study shows that the proposed approach adjusts to the ISP's constraint on time-average reconfiguration rate by trading the throughput performance efficiently. Since the reconfiguration overhead is reduced, the network controller could be allowed to optimize resource allocation more frequently, in order to quickly and efficiently respond to the network changes. The paper analyses the impact of the reconfiguration rate constraint, average flow duration and the frequency of TE on the overall network performance.

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Section: Introductionmentioning

confidence: 99%

Dynamic optimization of load-balancing and reconfiguration overhead in SD-ISP networks

Tomović¹,

Radusinović²

2019

Telfor J

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“…On the other side, ISP networks must fulfill Service Level Agreements (SLAs) to their customers and thus cannot "shape" traffic matrix. Recent works [9,10] take into account this limitation and propose TE methods for Software Defined ISP (SD-ISP) networks. In [9], flow migration approach has been proposed for dynamically manage network resources.…”

Section: Introduction Ith the Evolution Of Internet Of Things (Iot)mentioning

confidence: 99%

“…In [9], flow migration approach has been proposed for dynamically manage network resources. In [10], a trade-off between scalability of SDN control plane and routing optimality is investigated. Authors of [10] argue that performance of ISP networks that use load balancing over multiple paths is not significantly affected by the timeliness of traffic matrix information.…”

Section: Introduction Ith the Evolution Of Internet Of Things (Iot)mentioning

confidence: 99%

“…In [10], a trade-off between scalability of SDN control plane and routing optimality is investigated. Authors of [10] argue that performance of ISP networks that use load balancing over multiple paths is not significantly affected by the timeliness of traffic matrix information. However, unlike our work, they have not considered any traffic differentiation.…”

Section: Introduction Ith the Evolution Of Internet Of Things (Iot)mentioning

confidence: 99%

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Traffic engineering approach to virtual-link provisioning in software-defined ISP networks

Tomović¹,

Radusinović²

2018

Telfor J

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-In this paper, we propose a new approach to virtual-link provisioning in ISP (Internet Service Provider) networks. The approach relies on Software Defined Networking (SDN) architecture based on OpenFlow that allows highly granular traffic splitting across multiple paths. The traffic control logic of SDN controller is divided into offline and online component. The online component handles dynamic arrivals of virtual-link requests in accordance with Service Level Agreements (SLAs) requirements. The offline component is responsible for periodic optimization of traffic distribution in the network. In this way, we tend to increase acceptance ratio for virtual-link requests and minimize degradation of best-effort traffic in a scalable manner. Our simulation results show that the proposed method for virtuallink provisioning outperforms solutions that rely on Constrained Shortest Path First (CSPF) and Equal Cost Multi-Path (ECMP) routing.

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Optimized Routing in Software Defined Networks – A Reinforcement Learning Approach

Mahboob

Jung

Chung

2019

Advances in Intelligent Systems and Computing

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Short-Sighted Routing, or When Less is More

Cited by 10 publications

References 11 publications

Dynamic optimization of load-balancing and reconfiguration overhead in SD-ISP networks

Dynamic optimization of load-balancing and reconfiguration overhead in SD-ISP networks

Traffic engineering approach to virtual-link provisioning in software-defined ISP networks

Optimized Routing in Software Defined Networks – A Reinforcement Learning Approach

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