On the Feasibility of a Consistent and Fault-Tolerant Data Store for SDNs

Botelho, Fabio; Ramos, Fernando M. V.; Kreutz, Diego; Bessani, Alysson

doi:10.1109/ewsdn.2013.13

Cited by 49 publications

(43 citation statements)

References 13 publications

(13 reference statements)

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“…Other proposals that try to define interfaces between controllers include Onix data import/export functions [7], ForCES CE-CE interface [30], [211], ForCES Intra-NE cold-standby mechanisms for high availability [212], and distributed data stores [213]. An east/westbound API requires advanced data distribution mechanisms such as the Advanced Message Queuing Protocol (AMQP) [214] used by DISCO [185], techniques for distributed concurrent and consistent policy composition [215], transactional databases and DHTs [216] (as used in Onix [7]), or advanced algorithms for strong consistency and fault tolerance [213], [198].…”

Section: Eastbound and Westboundmentioning

confidence: 99%

“…An east/westbound API requires advanced data distribution mechanisms such as the Advanced Message Queuing Protocol (AMQP) [214] used by DISCO [185], techniques for distributed concurrent and consistent policy composition [215], transactional databases and DHTs [216] (as used in Onix [7]), or advanced algorithms for strong consistency and fault tolerance [213], [198].…”

Section: Eastbound and Westboundmentioning

confidence: 99%

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Software-Defined Networking: A Comprehensive Survey

et al. 2015

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Abstract-The Internet has led to the creation of a digital society, where (almost) everything is connected and is accessible from anywhere. However, despite their widespread adoption, traditional IP networks are complex and very hard to manage. It is both difficult to configure the network according to predefined policies, and to reconfigure it to respond to faults, load and changes. To make matters even more difficult, current networks are also vertically integrated: the control and data planes are bundled together. Software-Defined Networking (SDN) is an emerging paradigm that promises to change this state of affairs, by breaking vertical integration, separating the network's control logic from the underlying routers and switches, promoting (logical) centralization of network control, and introducing the ability to program the network. The separation of concerns introduced between the definition of network policies, their implementation in switching hardware, and the forwarding of traffic, is key to the desired flexibility: by breaking the network control problem into tractable pieces, SDN makes it easier to create and introduce new abstractions in networking, simplifying network management and facilitating network evolution.In this paper we present a comprehensive survey on SDN. We start by introducing the motivation for SDN, explain its main concepts and how it differs from traditional networking, its roots, and the standardization activities regarding this novel paradigm. Next, we present the key building blocks of an SDN infrastructure using a bottom-up, layered approach. We provide an in-depth analysis of the hardware infrastructure, southbound and northbound APIs, network virtualization layers, network operating systems (SDN controllers), network programming languages, and network applications. We also look at cross-layer problems such as debugging and troubleshooting. In an effort to anticipate the future evolution of this new paradigm, we discuss the main ongoing research efforts and challenges of SDN. In particular, we address the design of switches and control platforms -with a focus on aspects such as resiliency, scalability, performance, security and dependability -as well as new opportunities for carrier transport networks and cloud providers. Last but not least, we analyze the position of SDN as a key enabler of a software-defined environment.

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Section: Eastbound and Westboundmentioning

confidence: 99%

Section: Eastbound and Westboundmentioning

confidence: 99%

Software-Defined Networking: A Comprehensive Survey

et al. 2015

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“…averaging about 1 KB. and no more than 4KB [17] . So the number of communication times per unit time can be used as a measure of communication overhead [18] .…”

Section: Communication Overheadmentioning

confidence: 99%

An Efficient Energy Conservation Dynamic Consistency Algorithm for SDN Control Plane

Li¹,

Sun²,

Zhang³

et al. 2018

dtcse

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Abstract. Centralized control, the main idea of SDN (Software-Defined Networking) to simplify the control flow, may make SDN suffer from performance bottlenecks. Therefore, we need to use a distributed control plane to overcome the problem. But there are also consistency problem in distributed control plane of SDN. In this paper, we first quantize the consistency, communication costs and availability with relevant research of SDN distributed control plane. Secondly, by normalized calculation, we find the relationship between them. Then we propose a dynamic consistency algorithm for the control plane of SDN. Finally, we corroborate the validity of the algorithm by some experiments. The experimental results show that the proposed algorithm can effectively improve the plane consistency of SDN control.

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“…Consequently, this definition encompasses concepts related to availability -an indicator of whether a service will be present when requested -and reliabil- Botelho et al [37] Kempf et al [40] ity -a measure of continued operation for a specified period of time. Also, dependability relates to measures of safety, integrity and maintainability;…”

Section: Resilience Disciplinesmentioning

confidence: 99%

“…Botelho et al [37] treats the consistency between a network controller and their redundant backups, focusing on performance aspects. The main conclusion of the authors is that strict consistency and fault tolerant systems can operate with acceptable performance.…”

Section: Fault Tolerance and Survivabilitymentioning

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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On the Feasibility of a Consistent and Fault-Tolerant Data Store for SDNs

Cited by 49 publications

References 13 publications

Software-Defined Networking: A Comprehensive Survey

Software-Defined Networking: A Comprehensive Survey

An Efficient Energy Conservation Dynamic Consistency Algorithm for SDN Control Plane

Resilience support in software-defined networking: A survey

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