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检索条件"主题词=Network functions virtualization"

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A novel qualitative metric based approach to the improvement of data plane flexibility in software-defined networks 18

A novel qualitative metric based approach to the improvement...

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18th IEEE International Conference on Smart Technologies (IEEE EUROCON)

作者： Kaljic, Enio Maric, Almir Hadzialic, Mesud Univ Sarajevo Fac Elect Engn Dept Telecommun Sarajevo Bosnia & Herceg

ISBN: (纸本)9781538693018

The software-defined networking (SDN) is an articulation of the idea of increasing the network programmability with the aim of solving the problems identified in earlier research, regarding the complex and the time-consuming process of the protocol and interface standardization. An analysis of research in the field of SDN, presented through various review and survey papers, has shown that previous research was not sufficiently focused on flexibility and programmability of the data plane in SDN. Therefore, the goal of this paper is to improve the flexibility of the data plane in SDN by increasing the programmability level of the packet-switching node. To achieve the set goal, it was necessary to choose an appropriate metric for evaluation of flexibility and programmability of the data plane. Since there is no common position on the choice of metrics, a novel metric based on qualitative criteria is proposed in this paper. An existing data plane architectures in SDN are observed through the proposed metric. In the end, a novel data plane architecture, with improved flexibility from the aspect of the qualitative metric, is proposed.

关键词： Data plane data plane architecture data plane flexibility data plane programmability deeply programmable network layer abstraction modular decomposition network virtualization network functions virtualization software-defined networking

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MDP and Machine Learning-Based Cost-Optimization of Dynamic Resource Allocation for network Function virtualization

MDP and Machine Learning-Based Cost-Optimization of Dynamic ...

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12th IEEE International Conference on Services Computing (SCC)

作者： Shi, Runyu Zhang, Jia Chu, Wenjing Bao, Qihao Jin, Xiatao Gong, Chenran Zhu, Qihao Yu, Chang Rosenberg, Steven Dell Res Round Rock TX 78682 USA Carnegie Mellon Univ Silicon Valley Moffett Field CA USA

ISBN: (纸本)9781467372817

The introduction of network functions virtualization (NFV) enables service providers to offer software-defined network functions with elasticity and flexibility. Its core technique, dynamic allocation procedure of NFV components onto cloud resources requires rapid response to changes on-demand to remain cost and QoS effective. In this paper, Markov Decision Process (MDP) is applied to the NP-hard problem to dynamically allocate cloud resources for NFV components. In addition, Bayesian learning method is applied to monitor the historical resource usage in order to predict future resource reliability. Experimental results show that our proposed strategy outperforms related approaches.

关键词： network functions virtualization Resource Allocation Markov Decision Process Bayesian Learning

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SDN and NFV Dynamic Operation of LTE EPC Gateways for Time-Varying Traffic Patterns 6

SDN and NFV Dynamic Operation of LTE EPC Gateways for Time-V...

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6th International ICST Conference on Mobile networks and Management (MONAMI)

作者： Basta, Arsany Blenk, Andreas Hoffmann, Marco Morper, Hans Jochen Hoffmann, Klaus Kellerer, Wolfgang Tech Univ Munich D-80290 Munich Germany Nokia Solut & Networks Munich Germany

ISBN: (纸本)9783319162928;9783319162911

The introduction of network functions virtualization (NFV) and Software Defined networking (SDN) to mobile networks enables operators to control and dimension their network resources with higher granularity and on a more fine-grained time scale. This dynamic operation allows operators to cope with the rapid growth of traffic and user demands, in addition to reducing costs. In this paper, we model and analyze a realization of the mobile core network as virtualized software instances running in datacenters (DC) and SDN transport network elements (NE), with respect to time-varying traffic demands. It is our objective to determine the datacenters placement that achieves the minimum transport network load considering time-varying traffic and under a data-plane delay budget. A second objective is to achieve power savings, considering the variation of traffic over time, by using the available datacenter resources or by acquiring additional resources.

关键词： network functions virtualization Software Defined networking Datacenters Mobile core gateways Time-varying traffic

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The Cloud Service Distribution Problem in Distributed Cloud networks

The Cloud Service Distribution Problem in Distributed Cloud ...

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IEEE International Conference on Communications (ICC)

作者： Barcelo, Marc Llorca, Jaime Tulino, Antonia M. Raman, Narayan Univ Autonoma Barcelona E-08193 Barcelona Spain Alcatel Lucent Bell Labs Murray Hill NJ USA

ISBN: (纸本)9781467364324

The cloud service distribution problem (CSDP) is to find the placement of both content and virtual cloud service functions (vCSFs) over a distributed cloud network platform, that meets user requests, satisfies network resource capacities and minimizes overall network cost. We formulate the CSDP as a minimum cost mixed-cast flow problem in which cloud services are represented by a service graph that encodes the relationship between input and output information flows via the virtual functions that create them. As a result, the CSDP can be efficiently formulated using only linear constraints and solved via integer linear programming (ILP). Our solution jointly optimizes the use of compute, storage and transport resources in arbitrary cloud network topologies, and is able to capture flexible service chaining, resource consolidation savings, unicast and multicast delivery, and latency constraints. We further provide conditions for which a relaxed version of the presented ILP leads to optimal polynomial-time solutions. We finally present results for an illustrative sample of cloud services that show the advantage of optimizing the placement of content and vCSFs over a programmable distributed cloud network.

关键词： distributed cloud network cloud service distribution software defined networking network functions virtualization

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Mobility Management Enhancements for 5G Low Latency Services

Mobility Management Enhancements for 5G Low Latency Services

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IEEE International Conference on Communications (ICC)

作者： Heinonen, Johanna Korja, Pekka Partti, Tapio Flinck, Hannu Poyhonen, Petteri Nokia Networks Espoo Finland

ISBN: (纸本)9781509004485

The 5G vision is to create a network that outperforms the current mobile networks in terms of flexibility, performance and use cases. This raises the requirements of the network to a totally new level. In order to achieve the latency goals the related applications and network functions need to be placed into the network edge. Full mobility support requires also enhancements to the current mobility management procedures. These include a gateway selection algorithm that is topology aware, handover procedures that are able to switch the user plane as quickly as possible and a seamless gateway relocation procedure. The low latency applications should also be able to manage the state between the application instances in different edge nodes. In this paper we introduce a 5G low latency network slice that offers 5G low latency services from the closest network edge node. Our prototype implementation verifies that this can be achieved by re-evaluating the optimality of the mobility anchor during each handover and executing a gateway relocation procedure when needed.

关键词： 5G low latency mobility management distributed cloud network functions virtualization Software Defined networking OpenStack

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BRAIN: Blockchain-based Reverse Auction for Infrastructure Supply in Virtual network functions-as-a-Service

BRAIN: Blockchain-based Reverse Auction for Infrastructure S...

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International-Federation-for-Information-Processing (IFIP) networking Conference (IFIP networking)

作者： Franco, Muriel Figueredo Scheid, Eder John Granville, Lisandro Zambenedetti Stiller, Burkhard Univ Zurich UZH Dept Informat IfI Commun Syst Grp CSG Binzmhlestr 14 CH-8050 Zurich Switzerland Fed Univ Rio Grande Sul UFRGS Inst Informat INF Comp Networks Grp Av Bento Gonsalves 9500 Porto Alegre RS Brazil

ISBN: (纸本)9783903176164

network functions virtualization (NFV) is transforming the way in which network operators acquire and manage network services. By using virtualization technologies to move packet processing from dedicated hardware to software, NFV has introduced a new market focused on the offer and distribution of Virtual network functions (VNF). Infrastructure Providers (InP) can benefit from an NFV market by providing their infrastructures to fulfill demands of end-users that, in turn, acquire VNFs-as-a-Service (VNFaaS). In this context, solutions that promote the competition between InPs can lead to lower prices, while increasing VNF performance to accommodate specific demands of end-users. In this paper, BRAIN, a blockchain-based reverse auction is presented to introduce an auditable solution in which InPs can compete to host VNFs taking into account the demands of each particular end-user. Such a solution helps reduce costs involved in VNF's commercialization and also monetize NFV-enabled infrastructures. BRAIN is supported by a case study that provides evidence of the solution's feasibility and effectiveness. A discussion regarding blockchain advantages and drawbacks in this use-case (e.g.,, additional costs and time) concludes this paper.

关键词： network functions virtualization Virtual network functions-as-a-Service Infrastructure Supply Blockchain Smart Contract

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S6: a Smart, Social and SDN-based Surveillance System for Smart-cities

S6: a Smart, Social and SDN-based Surveillance System for Sm...

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14th International Conference on Mobile Systems and Pervasive Computing (MobiSPC) / 12th International Conference on Future networks and Communications (FNC)

作者： Rametta, Corrado Baldoni, Gabriele Lombardo, Alfio Micalizzi, Sergio Vassallo, Alessandro Univ Catania DIEEI Vle Doria 6 I-95125 Catania Italy

In the last few years, Software Defined networks (SDN) and network functions virtualization (NFV) have been introduced in the Internet as a new way to design, deploy and manage networking services. Working together, they are able to consolidate and deliver the networking components using standard IT virtualization technologies not only on high-volume servers, but also in end user premises, Telco operator edge and access nodes thus allowing the emergence of new services. In this context, this paper presents a smart video surveillance platform designed to exploit the facilities offered by full SDN-NFV networks. This platform is based on free and open source software running on Provider Equipment (PE), so allowing function deployment simplification and management cost reduction. (C) 2017 The Author(s). Published by Elsevier B.V.

关键词： Software Defined networking network functions virtualization Fog/Edge Computing Live Video Broadcasting

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Towards a fully automated and optimized network security functions orchestration 4

Towards a fully automated and optimized network security fun...

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4th IEEE International Conference on Computing, Communications and Security (ICCCS)

作者： Bringhenti, Daniele Marchetto, Guido Sisto, Riccardo Valenza, Fulvio Yusupov, Jalolliddin Politecn Torino Dip Automat & Informat Turin Italy

ISBN: (纸本)9781728108759

Automated policy-based network security management tools represent a new research frontier to be fully explored, so as to reduce the number of human errors due to a manual and suboptimal configuration of security services. Moreover, the agility that an automated tool would require can be provided by the most recent networking technologies, network functions virtualization and Software-Defined networking, which move the network management from the hardware level to the software. However, even though a Security Automation approach is nowadays feasible and would bring several benefits in facing cybersecurity attacks, pending problems are that currently only a limited number of automatic management tools have been developed and that they do not have a direct integration with cloud orchestrators, consequently requiring human interaction. Given these considerations, in this paper we propose a novel framework, whose goal is to automatically and optimally allocate and configure security functions in a virtualized network service in a formal and verified way, directly integrated in cloud orchestrators. We validated this contribution through an implementation that is able to cooperate with two well-known orchestrators, that are Open Baton and Kubernetes.

关键词： network security optimization network security orchestration cloud security network functions virtualization

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A Model for Automated Cybersecurity Threat Remediation and Sharing 9

A Model for Automated Cybersecurity Threat Remediation and S...

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9th IEEE International Conference on network Softwarization (IEEE NetSoft) - Boosting Future networks through Advanced Softwarization

作者： Settanni, Francesco Regano, Leonardo Basile, Cataldo Lioy, Antonio Politecn Torino Dipartimento Automat & Informat Turin Italy

ISBN: (纸本)9798350399806

This paper presents an approach to the automatic remediation of threats reported by Cyber Threat Intelligence. Remediation strategies, named Recipes, are expressed in a close-to-natural language for easy validation. Thanks to the developed models, they are interpreted, contextualized, and then translated into CACAO Security playbooks, a standard format ready for automatic enforcement, without human intervention. The presented approach also allows sharing of remediation procedures on threat-sharing platforms (e.g. MISP) which improves the overall security posture. The effectiveness of the approach has been tested in the context of two EC-funded projects.

关键词： network functions virtualization Automated Risk Remediation Threat Sharing

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Switchboard: A Middleware for Wide-Area Service Chaining 19

Switchboard: A Middleware for Wide-Area Service Chaining

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20th ACM/IFIP/USENIX International Middleware Conference

作者： Sharma, Abhigyan Ozawa, Yoji Hiltunen, Matti Joshi, Kaustubh Schlichting, Richard Gao, Zhaoyu AT&T Labs Res Austin TX 78759 USA Hitachi Ltd Hitachi Ibaraki Japan US Naval Acad Annapolis MD 21402 USA UMass Amherst Amherst MA USA

ISBN: (纸本)9781450370097

Production networks are transitioning from the use of physical middleboxes to virtual network functions (VNFs), which makes it easy to construct highly-customized service chains of VNFs dynamically using software. Wide-area service chains are increasingly important given the emergence of heterogeneous execution platforms consisting of customer premise equipment (CPE), small edge cloud sites, and large centralized cloud data centers, since only part of the service chain can be deployed at the CPE and even the closest edge site may not always be able to process all the customers' traffic. Switchboard is a middleware for realizing and managing such an ecosystem of diverse VNFs and cloud platforms. It exploits principles from service-oriented architectures to treat VNFs as independent services, and provides a traffic routing platform shared by all VNFs. Moreover, Switchboard's global controller optimizes wide-area routes based on a holistic view of customer traffic as well as the resources available at VNFs and the underlying network. Switchboard globally optimized routes achieve up to 57% higher throughput and 49% lower latency than a distributed load balancing approach in a wide-area testbed. Its routing platform supports line-rate traffic with millions of concurrent flows.

关键词： service chains network functions virtualization cloud computing traffic engineering

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