Network Virtualization - Opportunities and Challenges for Operators

Carapinha, Jorge; Feil, Peter D.; Weissmann, Paul; Thorsteinsson, Saemundur E.; Etemoglu, Cagri; Ingpórsson, Ólafur; Ciftci, Selami; Melo, Márcio

doi:10.1007/978-3-642-15877-3_15

Cited by 11 publications

(8 citation statements)

References 2 publications

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“…NaaS concept materialization also includes the provision of a virtual network service by the owners of the network infrastructure to a third party Virtual Network Provider (VNP) or Virtual Network Operator (VNO) (Carapinha, 2010). .…”

Section: Infrastructure As a Service (Iaas)mentioning

confidence: 99%

The State Of Cloud Computing In Nigeria

Iwuchukwu¹,

Atimati²,

Ndukwe³

et al. 2017

IOSR JEEE

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Section: Infrastructure As a Service (Iaas)mentioning

confidence: 99%

The State Of Cloud Computing In Nigeria

Iwuchukwu¹,

Atimati²,

Ndukwe³

et al. 2017

IOSR JEEE

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“…Network virtualization has many aspects, including virtualized dual backbones, network service virtualization, virtual service orchestration, network I/O virtualization, and network-hosted storage virtualization. Figure 7 presents a general networkvirtualization architecture consisting of firewall-defined layers [16,17].…”

Section: Definitionmentioning

confidence: 99%

“…Virtual links provide a means of dividing and sharing physical links. The concept of virtual links ensures flexibility in network topology [16,17].…”

Section: I) Virtual Network User/end Usermentioning

confidence: 99%

Software defined networking: State of the art and research challenges

et al. 2014

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Abstract-Plug-and-play information technology (IT) infrastructure has been expanding very rapidly in recent years. With the advent of cloud computing, many ecosystem and business paradigms are encountering potential changes and may be able to eliminate their IT infrastructure maintenance processes. Real-time performance and high availability requirements have induced telecom networks to adopt the new concepts of the cloud model: software-defined networking (SDN) and network function virtualization (NFV). NFV introduces and deploys new network functions in an open and standardized IT environment, while SDN aims to transform the way networks function. SDN and NFV are complementary technologies; they do not depend on each other. However, both concepts can be merged and have the potential to mitigate the challenges of legacy networks. In this paper, our aim is to describe the benefits of using SDN in a multitude of environments such as in data centers, data center networks, and Network as Service offerings. We also present the various challenges facing SDN, from scalability to reliability and security concerns, and discuss existing solutions to these challenges.

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“…By using low-cost commodity servers, NFV can reduce Capital and Operational Expenditure and maximize Return on Investment (RoI) [4]. However, current early-stage deployments and platforms of NFV by large ISPs and DC network operators suffer from the statically-configured underlying routing mechanisms in place that do not support open interfaces and result in operator and environment-specific solutions in static or semi-static environments [5] [6].…”

Section: Introductionmentioning

confidence: 99%

Container-based network function virtualization for software-defined networks

Cziva

Jouët

White

et al. 2015

2015 IEEE Symposium on Computers and Communication (ISCC)

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Today's enterprise networks almost ubiquitously deploy middlebox services to improve in-network security and performance. Although virtualization of middleboxes attracts a significant attention, studies show that such implementations are still proprietary and deployed in a static manner at the boundaries of organisations, hindering open innovation.In this paper, we present an open framework to create, deploy and manage virtual network functions (NF)s in OpenFlowenabled networks. We exploit container-based NFs to achieve low performance overhead, fast deployment and high reusability missing from today's NFV deployments. Through an SDN northbound API, NFs can be instantiated, traffic can be steered through the desired policy chain and applications can raise notifications. We demonstrate the systems operation through the development of exemplar NFs from common Operating System utility binaries, and we show that container-based NFV improves function instantiation time by up to 68% over existing hypervisorbased alternatives, and scales to one hundred co-located NFs while incurring sub-millisecond latency.

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Network Virtualization - Opportunities and Challenges for Operators

Cited by 11 publications

References 2 publications

The State Of Cloud Computing In Nigeria

The State Of Cloud Computing In Nigeria

Software defined networking: State of the art and research challenges

Container-based network function virtualization for software-defined networks

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