Can open flow make transport networks smarter and dynamic? An overview on transport SDN

Alvizu, Rodolfo; Maier, Guido

doi:10.1109/saconet.2014.6867771

Cited by 17 publications

(11 citation statements)

References 24 publications

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“…The authors present performance and scalability results to demonstrate that SDN can help to mitigate the limitations of rigid BGP deployments, such as the difficulty in supporting architectural innovation. Additionally, an overview of transport networks in the context of SDN is provided by Alvizu et al [127].…”

Section: Legitimate Trafficmentioning

confidence: 99%

Resilience support in software-defined networking: A survey

et al. 2015

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Software-Defined Networking (SDN) is an architecture for computer networking that provides a clear separation between network control functions and forwarding operations. The abstractions supported by this architecture are intended to simplify the implementation of several tasks that are critical to network operation, such as routing and network management. Computer networks have an increasingly important societal role, requiring them to be resilient to a range of challenges. Previously, research into network resilience has focused on the mitigation of several types of challenges, such as natural disasters and attacks. Capitalising on its benefits, including increased programmability and a clearer separation of concerns, significant attention has recently focused on the development of resilience mechanisms that use software-defined networking approaches. In this article, we present a survey that provides a structured overview of the resilience support that currently exists in this important area. We categorize the most recent research on this topic with respect to a number of resilience disciplines. Additionally, we discuss the lessons learned from this investigation, highlight the main challenges faced by SDNs moving forward, and outline the research trends in terms of solutions to mitigate these challenges . 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 This article presents a survey on the support for network resilience in SoftwareDefined Networking (SDN). This has been the subject of intense investigation by the academic and industrial community in the past few years, as evidenced by the number of papers included in our survey (159 references in total). Capitalizing on the benefits of SDN, including increased programmability and a clearer separation of concerns, significant attention has recently focused on the development of resilience mechanisms that use software-defined networking approaches. Thus, a wide range of solutions to classical network problems have been revisited using this architecture, but many problems continue to be challenging.Our survey investigates the resilience support that currently exists in this important area, and categorizes the most recent research on this topic with respect to a number of resilience disciplines. Additionally, we discuss the lessons learned from this investigation, highlight the main challenges faced by SDNs moving forward, and outline the research trends in terms of solutions to mitigate these challenges. The aim of the survey is to offer to the reader a structured view of network resilience in the SDN spectrum, and how resilience aspects are supported in these architectures.We believe that this subject material is closely aligned with the objectives of the journal. Please be assured that:1. This paper has not been published or accepted for publication w...

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Section: Legitimate Trafficmentioning

confidence: 99%

Resilience support in software-defined networking: A survey

et al. 2015

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“…[87], [91], [92], [93], [94] PCE [95], [96], [97], [85], [98], [99] ILSA and Service-Oriented schemes [100], [101], [42], [102], [103] is worth mentioning that recovery schemes for hybrid network must be able to solve complex failure scenarios.…”

Section: Sdnmentioning

confidence: 99%

Managing resilience in carrier grade networks: Survey, open issues and trends

Ramírez

Masip-Bruin

Marín‐Tordera

et al. 2015

Computer Communications

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Abstract-IP/MPLS and Optical technologies are the foundations of current Carrier-Grade Networks (CGNs), due to both the flexibility of IP/MPLS to provide services with distinct requirements and the high transport capacity offered by new Optical technologies, such as Elastic Optical Networks (EONs). However, despite of the widespread adoption of these two technologies, interoperability issues still impact on key network features, in particular on resilience capabilities. Resilience is gaining momentum in recent years due to the advent of new CGN scenarios, such as Data Center Networks (DCNs), where a link or a node failure might lead to a substantial traffic loss. We consider that any potential contribution on the resilience arena, must be built on top of a solid knowledge of available proposals emphasizing most appealing research trends and the limitations affecting the management of resilience in CGNs. Aligned to this scenario, the main goals of this article are: (1) compile distinct approaches for managing resilience; (2) describe in a comprehensive manner, the challenges faced by CGN operators in order to manage resilience; (3) show why current solutions for managing resilience do not completely address the interoperability issues present in multilayer CGNs with multi-vendor settings, and; (4) provide insights for future trends.

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“…It is broadly acknowledged that the SDN-based optical networking can improve the QoS needs of the paths in a more successful manner. In SDN-based optical networking, the controller will take the critical decisions on how to configure and when to reconfigure the set of optical connections with the intention to preserve the various QoS necessities like bandwidth, BER, congestion, delay of the dynamic traffic [2]. Hence the SDN controller can dynamically decide the routing, and wavelength allocation approach/algorithm to optimally take advantage of the fiber capacity and the network status.…”

Section: Introductionmentioning

confidence: 99%

Match Field based Algorithm Selection Approach in Hybrid SDN and PCE Based Optical Networks

Selvaraj¹,

Nagarajan²

2018

KSII TIIS

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The evolving internet-based services demand high-speed data transmission in conjunction with scalability. The next generation optical network has to exploit artificial intelligence and cognitive techniques to cope with the emerging requirements. This work proposes a novel way to solve the dynamic provisioning problem in optical network. The provisioning in optical network involves the computation of routes and the reservation of wavelenghs (Routing and Wavelength assignment-RWA). This is an extensively studied multi-objective optimization problem and its complexity is known to be NP-Complete. As the exact algorithms incurs more running time, the heuristic based approaches have been widely preferred to solve this problem. Recently the software-defined networking has impacted the way the optical pipes are configured and monitored. This work proposes the dynamic selection of path computation algorithms in response to the changing service requirements and network scenarios. A software-defined controller mechanism with a novel packet matching feature was proposed to dynamically match the traffic demands with the appropriate algorithm. A software-defined controller with Path Computation Element-PCE was created in the ONOS tool. A simulation study was performed with the case study of dynamic path establishment in ONOS-Open Network Operating System based software defined controller environment. A java based NOX controller was configured with a parent path computation element. The child path computation elements were configured with different path computation algorithms under the control of the parent path computation element. The use case of dynamic bulk path creation was considered. The algorithm selection method is compared with the existing single algorithm based method and the results are analyzed.

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Can open flow make transport networks smarter and dynamic? An overview on transport SDN

Cited by 17 publications

References 24 publications

Resilience support in software-defined networking: A survey

Resilience support in software-defined networking: A survey

Managing resilience in carrier grade networks: Survey, open issues and trends

Match Field based Algorithm Selection Approach in Hybrid SDN and PCE Based Optical Networks

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