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IEEE Global Communications Conference

作者： Maryam Jalalitabar Guangchun Luo Chenguang Kong Xiaojun Cao Department of Computer Science Georgia State University School of Computer Science and Engineering University of Electronic Science and Technology of China

ISBN: (纸本)9781509013296

network function virtualization (NFV) explores the virtualization technologies to offer network-as-a-Service (NaaS) through connected virtual network functions. The network operations that were previously performed by specialized hardware are consolidated as software-based virtual network functions (VNFs). These VNFs can be implemented in the telecom clouds with high volume servers, switches and storage. With the NFV orchestration, a service function graph (SFG) can be built to provide network services. In this paper, we study how to efficiently construct the SFG from a set of VNF requests and map the SFG onto the substrate network while considering the priority dependence between the VNFs. We define the problem of service function graph design and mapping (SFG_PD) and propose an SFG_PD mapping with dependent directional acyclic graph (SFG_DAG) algorithm. The proposed SFG_DAG algorithm can jointly construct the VNFs graph and map VNFs onto the substrate network while minimizing the bandwidth consumption in the substrate network. Our simulation and analysis show that accommodating the VNFs based on the requested bandwidth yields the best performance in terms of the total bandwidth consumption.

关键词： network function virtualization Priority Dependence

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Enabling network function combination via service chain instantiation

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COMPUTER networkS 2015年 92卷 396-407页

作者： Cheng, Guozhen Chen, Hongchang Hu, Hongchao Wang, Zhiming Lan, Julong Natl Digital Switching Syst Engn & Technol R&D Ct Zhengzhou 450002 Peoples R China

Isolated network functions (also known as middleboxes) are difficult and costly to manage in a cooperative fashion due to their hardware-based implementation and proprietary interfaces. The integration of software-defined networking (SDN) and network functions virtualization (NFV) is promising to address this challenging issue. However, an efficient framework is needed to provide cooperative control of network function instances. To this end, a service chain instantiation framework based on NFV and SDN is proposed in this paper. There are three unique contributions in this work. First, the network functions are featured with a new abstraction, called atomic function, which defines the public features of network functions while the core details are hidden. A description-language is utilized to help service providers to develop various instances of an atomic function. Second, we propose an implementation of service chain consisting of a sequence of atomic functions with order constraints. It is instantiated by optimally selecting different function instances over the network. We formulate this service chain instantiation as an integer linear programing problem, with a simulated annealing solver to approach the optimal solution. Third, we implement a proof-of-concept for service chain, Matchmaker, atop the SDN controller. The experimental results demonstrate that Matchmaker can manage network functions in an efficient and scalable way. (C) 2015 Elsevier B.V. All rights reserved.

关键词： Software-defined networking network function virtualization function combination Service chain

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SecMANO: Towards network functions virtualization (NFV) Based Security MANagement and Orchestration

SecMANO: Towards Network Functions Virtualization (NFV) Base...

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IEEE International Conference on Trust, Security and Privacy in Computing and Communications (TrustCom)

作者： Montida Pattaranantakul Ruan He Ahmed Meddahi Zonghua Zhang Institut Mines-Télécom/TELECOM SudParis Evry France Institut Mines-Télécom/TELECOM Lille Villeneuve-d‘Ascq France Orange Labs France

ISBN: (纸本)9781509032068

network functions virtualization (NFV) has recently emerged as one of the major technological driving forces that significantly accelerate the evolution of today's computer and communication networks. Despite the advantages of NFV, e.g., saving investment cost, optimizing resource consumption, improving operational efficiency, simplifying network service lifecycle management, lots of novel security threats and vulnerabilities will be introduced, thereby impeding its further development and deployment in practice. In this paper, we briefly report our threat analysis in the context of NFV, and identify the corresponding security requirements. The purpose is to establish a comprehensive threat taxonomy and provide a guideline to develop effective security countermeasures. Furthermore, a conceptual design framework for NFV based security management and service orchestration is presented, with an objective to dynamically and adaptively deploy and manage security functions on the demands of users and customers. A use case about NFV based access control is also developed, illustrating the feasibility and advantages of implementing NFV based security management and orchestration.

关键词： Monitoring virtualization Virtual machine monitors Hardware network function virtualization Security management

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Defining a Generic OR-VNFM Interface for Configuring network functions

Defining a Generic OR-VNFM Interface for Configuring Network...

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European Workshop on Software Defined networking (EWSDN)

作者： Davide Pezzolla Ivano Cerrato Fulvio Risso Gabriele Castellano Dept. of Computer and Control Engineering Politecnico di Torino Torino Italy

ISBN: (纸本)9781509061471

The ETSI model defines a generic architecture to deploy and configure virtual network functions. While many efforts from both academia and industry focus on the problem of deploying those virtual network functions, little attention has been given to the interface needed to configure such applications. This paper explores the problem of dynamically configuring virtual network functions and proposes an implementation for the ETSI MANO OR-VNFM interface that supports generic network functions by exploiting a message bus and YANG models.

关键词： Tools Virtual machining IP networks Internet Web pages Industries network function virtualization

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Content Delivery networks as a Virtual network function: a Win-Win ISP-CDN Collaboration

Content Delivery Networks as a Virtual Network Function: a W...

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IEEE Global Communications Conference

作者： Nicolas Herbaut Daniel Negru Yiping Chen Pantelis A. Frangoudis Adlen Ksentini LaBRI Univ. Bordeaux Talence France Orange Labs. Chatillon France IRISA Lab. Univ. of Rennes 1 Rennes France

ISBN: (纸本)9781509013296

The switch in video delivery from traditional medium to Over-The-Top (OTT) based services has been a game changer for stakeholders of the media delivery ecosystem. It has changed the value chain enabling Content Delivery networks and Content Providers to take the lion's share at the expense of Internet/network Service Providers. Even if establishing collaboration between them naturally appears as the key to provide good Quality of Service to the end-users, they struggle in finding efficient and fair ways to do so. This paper directly tackles this problem and proposes a new model for content delivery actors to collaborate over a Virtualized Infrastructure, fairly balancing the revenue stream created. We list the main challenges and the new technical opportunities to solve them, among which the deployment of a distributed network function virtualization (NFV) platform at the edge of the Internet Service Provider's network where a virtual Content Delivery network (vCDN) is proposed to be deployed. Furthermore, we apply a game-theoretic analysis to study different ISP-CDN collaboration models and identify optimality conditions for our proposed CDN-as-a-Virtual-network-function approach.

关键词： Servers Collaboration Streaming media Routing Content distribution networks network function virtualization Limiting

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Proposing and evaluating the performance of a firewall implemented as a virtualized network function

Proposing and evaluating the performance of a firewall imple...

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International Conference on the network of the Future (NOF)

作者： Leopoldo A. F. Mauricio Marcelo G. Rubinstein Otto C. M. B. Duarte Grupo de Teleinformática e Automação Universidade Federal do Rio de Janeiro - COPPE/UFRJ Brazil Universidade do Estado do Rio de Janeiro - FEN/DETEL/PEL Brazil *** Brazil

ISBN: (纸本)9781509046720

The virtualization technology provides many advantages to datacenters such as: reduction of power, cooling, and hardware costs. Moreover, virtualization simplifies administration and maintenance. On the other hand, for assuring security policies, a virtualized datacenter may require a large Access Control List (ACL) that can overload current commercial Top of Rack (ToR) equipment. This paper proposes and evaluates the performance of a firewall implemented as a virtualized network function in the Open source Platform for network functions virtualization (OPNFV) using commercial off-the-shelf servers. Results show that the function provides elastic capacity that can scale up, meeting the current ingress traffic demands.

关键词： Servers Cloud computing Random access memory Generators virtualization Security network function virtualization

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A Power Efficient and Robust Virtual network functions Placement Problem

A Power Efficient and Robust Virtual Network Functions Place...

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International Teletraffic Congress, ITC 21

作者： Antonio Marotta Andreas Kassler University of Karlstad Karlstad Sweden

ISBN: (纸本)9781509013043

Reducing the CAPEX and OPEX is a major concern for Telecom Operators (TOs): to this extent, network function virtualization (NFV) has been considered a key aspect to virtualize network functions and push them to the NFV Infrastructure. Virtual network functions (VNFs) can be deployed as a set of components running on several cooperating Virtual Machines (VMs) inside modern data centers. As a consequence, it becomes crucial for network operators to minimize the power consumption of their NFV infrastructure, by using the minimum set of physical servers and networking equipment subject to the constraints that VNFs impose on the infrastructure in terms of compute, memory, disk and network resources requirements. In this work, we present a joint resources and flow routing assignment problem for VNFs placement, with the objective of minimizing both the power consumption of the servers and switches needed to deploy the overall virtualized infrastructure and the routing graph. In contrast to many existing works assuming perfect knowledge on input parameters, such as VNFs CPU demands, which is difficult to predict, we propose a novel mathematical model based on the Robust Optimization (RO) theory to deal with data uncertainty. Our numerical evaluation focuses on a specific use-case, that is the deployment of a virtualized Evolved Packet Core (vEPC), namely the core for next generation mobile networks. We demonstrate that with our model, a vEPC operator can trade-off between two important aspects: the power consumption minimization on one side, and the protection from severe deviations of the input parameters on the other (e.g. the resources requirements).

关键词： Robustness Uncertainty Optimization Servers Numerical models Power demand network function virtualization

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PCIe-based network architectures over optical fiber links: An insight from the advent project

PCIe-based network architectures over optical fiber links: A...

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18th Italian National Conference on Photonic Technologies (Fotonica 2016)

作者： P. Boffi P. Parolari A. Gatto P. Martelli F. Corapi A. Albanese V. Costa P. Crosta C. Meani P. Paglierani M. Martinelli Politecnico di Milano Milano Lombardia IT Italtel SpA Settimo Milanese Lombardia IT

ISBN: (纸本)9781510835771

PCI Express based innovative architectures designed for datacentre connections are proposed exploiting fiber communications for remote very high-speed connectivity. According with the ADVENT project approach a disruptive scenario based on an unique PCIe fabric is described, assuring convergent, storage/analytics functionalities mapped to a global shared memory. In particular, the hardware configuration of this kind of the proposed architecture is presented for inter-host remote communications, showing the intrinsic advantages in terms of connectivity and applications. Moreover, experimentation of PCIe Gen3 interconnections over up to 2-km standard fiber is demonstrated strictly compliant with the standard.

关键词： active optical cable PCI Express network function virtualization datacentre

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Dynamic Allocation of Service function Chains under Priority Dependency Constraint

Dynamic Allocation of Service Function Chains under Priority...

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Mohamed Masoud Sanghoon Lee Saeid Belkasim Department of Computer Science Georgia State University Atlanta Georgia

ISBN: (纸本)9781509044719

network functions virtualization is a new technology for the future internet that eliminates the dependency of the network function and the hardware requirement. The network functions virtualization provides a successful approach for meeting the increase in demand of the end-to-end (E2E) services with low operational and capital costs. Replacing the network specific purpose hardware (e.g. firewall) with a software implementation of the network functions in which a chain of Virtualized network functions (VNFs) can logically connect the end points and provide the desired network services. However, this approach is associated with the challenge of dynamically mapping the predefined VNFs onto the existing substrate network in an optimal way. In this paper, we propose a simple and effective approach for mapping the VNFs with the physical resources in a dynamic service request environment. The algorithm considers the priority dependency between the VNFs as a case of study, with the objective of minimizing the mapping blocking rate.

关键词： Bandwidth Substrates Hardware virtualization Dynamic scheduling Resource management network function virtualization

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NFV federation

NFV federation

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International Conference on Emerging eLearning Technologies and Applications (ICETA)

作者： Tomáš Halagan Kotuliak Ivan Slovenska Technicka Univerzita Bratislava SK

ISBN: (纸本)9781509047024

Aim of this work is to create architecture by using a novel architecture composed from two logical domains - Core Management Domain and SDN/NFV domain. Core Management Domain (CMD) can be used as the means for interconnecting domains implemented and deployed by various network providers, public or private clouds or just by simple devices acting as NFV enabled devices that can create and chain virtualized network functions.

关键词： network function virtualization Companies Servers Routing Computer architecture Cloud computing

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