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Software-Defined Cloud Computing: A Systematic Review on Latest Trends and Developments

IEEE ACCESS 2019年 7卷 93294-93314页

作者： Abbasi, Aaqif Afzaal Abbasi, Almas Shamshirband, Shahaboddin Chronopoulos, Anthony Theodore Persico, Valerio Pescape, Antonio Fdn Univ Dept Software Engn Islamabad 44000 Pakistan Int Islamic Univ Dept Comp Sci Islamabad 44000 Pakistan Ton Duc Thang Univ Dept Management Sci & Technol Dev Ho Chi Minh City Vietnam Ton Duc Thang Univ Fac Informat Technol Ho Chi Minh City Vietnam Univ Texas San Antonio Dept Comp Sci San Antonio TX 78249 USA Univ Patras Dept Comp Engn & Informat Rion 26500 Greece Univ Napoli Federico II Elect Engn & Informat Technol Dept I-80125 Naples Italy

Cloud computing concepts offer effective and efficient tools for addressing resource-hungry computational problems. While conventional methods, architectures, and processing techniques may limit cloud data center performance, software-defined cloud computing (SDCC) is an approach where virtualization services to all network resources in a dc are software-defined and where software-defined networking (SDN) and cloud computing go hand in hand. SDCC-related concepts change the previous state of affairs by promoting the centralized control of networking functions in a data center. A key objective of developing software-driven cloud infrastructure is that the networking hardware, software, storage, security, and network traffic management is open and interoperable. This facilitates easy installation and management of networking functions in the cloud infrastructure. Employing SDCC concepts to cloud data centers can improve resource administration challenges to a greater extent. This paper presents a survey on SDCC. We begin by introducing SDCC environments and explain its main architectural components. We identify the essential contributions of various developments to this field and discuss the implementation challenges and limitations faced in their adoption. We also explore the potential of SDCC in two domains, namely, resource orchestration and application development, as case studies of specific interest. In an attempt to anticipate the future evolution, we discuss the important research opportunities and challenges in this promising field.

关键词： Cloud computing data centers infrastructure management networking network functions virtualization scalability software defined networking

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A Security Management Architecture for Time Synchronization Towards High Precision networks

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IEEE ACCESS 2021年 9卷 117542-117553页

作者： Li, Hongxing Li, Dengkui Zhang, Xiaodong Shou, Guochu Hu, Yihong Liu, Yaqiong Beijing Univ Posts & Telecommun Beijing Key Lab Network Syst Architecture & Conve Beijing 100876 Peoples R China Beijing Univ Posts & Telecommun Sch Informat & Commun Engn Beijing 100876 Peoples R China

Time synchronization is quickly becoming a fundamental prerequisite for a smart society. With the development of the fifth-generation (5G) network, time-sensitive networking (TSN), and the rise of high-precision networks, its accurate and reliable features have attracted an increasing amount of attention. As the most promising protocol with sub-microsecond accuracy, precision time protocol (PTP) has been widely used for network synchronization, and its proper operation and security are critical to the industries that build the infrastructure for a smart society. In order to provide synchronization security as a service, this paper presents a scheme based on software-defined networking (SDN) and network functions virtualization (NFV) principles for synchronization security. Security management is built as a virtual network function (VNF), and a mitigation mechanism is proposed to detect delay attacks and generate countermeasures. Finally, we investigate the impact of random delay attacks, constant delay attacks, and linear delay attacks and verify the performance of the proposed mitigation mechanism through experiments. The results show that the scheme is capable of detecting PTP delay attacks and mitigating their impact on time synchronization.

关键词： Synchronization Delays Security Protocols Clocks Security management Computer architecture Time synchronization delay attacks precision time protocol software-defined networking network functions virtualization time-sensitive networking high precision communication

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A Survey on Replica Server Placement Algorithms for Content Delivery networks

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IEEE COMMUNICATIONS SURVEYS AND TUTORIALS 2017年第2期19卷 1002-1026页

作者： Sahoo, Jagruti Salahuddin, Mohammad A. Glitho, Roch Elbiaze, Halima Ajib, Wessam South Carolina State Univ Dept Math & Comp Sci Orangeburg SC 29117 USA Univ Quebec Dept Comp Sci Montreal PQ H2X 3Y7 Canada Concordia Univ Montreal PQ Canada Univ Western Cape ZA-7535 Bellville South Africa

Content delivery networks (CDNs) have gained immense popularity over the years. Replica server placement is a key design issue in CDNs. It entails placing replica servers at meticulous locations, such that cost is minimized and quality of service of end-users is satisfied. Many replica server placement models have been proposed in the literature of traditional CDN. As the CDN architecture is evolving through the adoption of emerging paradigms, such as, cloud computing and network functions virtualization, new algorithms are being proposed. In this paper, we present a comprehensive survey of replica server placement algorithms in traditional and emerging paradigm-based CDNs. We categorize the algorithms and provide a summary of their characteristics. Besides, we identify requirements for an efficient replica server placement algorithm and perform a comparison in the light of the requirements. Finally, we discuss potential avenues for further research in replica server placement in CDNs.

关键词： Cloud computing content delivery networks network functions virtualization replica server placement

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A Survey on Data Plane Flexibility and Programmability in Software-Defined networking

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IEEE ACCESS 2019年 7卷 47804-47840页

作者： Kaljic, Enio Maric, Almir Njemcevic, Pamela Hadzialic, Mesud Univ Sarajevo Fac Elect Engn Dept Telecommun Sarajevo 71000 Bosnia & Herceg

Software-defined networking (SDN) has attracted the attention of the research community in recent years, as evidenced by a large number of survey and review papers. The architecture of SDN clearly recognizes three planes: application, control, and data planes. The application plane executes network applications, the control plane regulates the rules for the entire network based on the requests generated by network applications, and based on the set rules, the controller configures the switches in the data plane. The role of the switch in the data plane is to simply forward packets based on the instructions given by the controller. By analyzing the SDN-related research papers, it is observed that research, from the very beginning, is insufficiently focused on the data plane. Therefore, this paper gives a comprehensive overview of the data plane survey with a particular emphasis on the problem of programmability and flexibility. The first part of the survey is dedicated to the evaluation of actual data plane architectures through several definitions and aspects of data plane flexibility and programmability. Then, an overview of the SDN-related research was presented with the aim of identifying the key factors influencing the gradual deviation from the original data plane architectures given with ForCES and OpenFlow specifications. In this paper, we used the term data plane evolution for this deviation. By establishing a correlation between the treated problem and the problem-solving approaches, the limitations of ForCES and OpenFlow data plane architectures were identified. Based on the identified limitations, a generalization of approaches to addressing the problem of data plane flexibility and programmability has been made. By examining the generalized approaches, open issues have been identified, establishing the grounds for future research directions proposal.

关键词： Data plane data plane abstractions data plane architectures data plane flexibility data plane implementations data plane languages data plane programmability deeply programmable networks description languages energy consumption energy efficiency hardware-based implementations measurement monitoring network virtualization network functions virtualization networking technologies performance programming languages quality of service reliability security software-based implementations software-defined networking stateful data plane

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AI-Driven Provisioning in the 5G Core

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IEEE INTERNET COMPUTING 2021年第2期25卷 18-25页

作者： Sheoran, Amit Fahmy, Sonia Cao, Lianjie Sharma, Puneet Purdue Univ W Lafayette IN 47906 USA Hewlett Packard Labs Palo Alto CA 94304 USA

network slicing enables communication service providers to partition physical infrastructure into logically independent networks. network slices must be provisioned to meet the service-level objectives (SLOs) of disparate offerings, such as enhanced mobile broadband, ultrareliable low-latency communications, and massive machine-type communications. network orchestrators must customize service placement and scaling to achieve the SLO of each network slice. In this article, we discuss the challenges encountered by network orchestrators in allocating resources to disparate 5G network slices, and propose the use of artificial intelligence to make core placement and scaling decisions that meet the requirements of network slices deployed on shared infrastructure. We explore how artificial intelligence-driven scaling algorithms, coupled with functionality-aware placement, can enable providers to design closed-loop solutions to meet the disparate SLOs of future network slices.

关键词： 5G mobile communication Resource management Noise measurement Ultra reliable low latency communication Hardware Reliability Data centers Telecommunications 5G AI network functions virtualization

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Secure NFV Orchestration Over an SDN-Controlled Optical network With Time-Shared Quantum Key Distribution Resources

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JOURNAL OF LIGHTWAVE TECHNOLOGY 2017年第8期35卷 1357-1362页

作者： Aguado, Alejandro Hugues-Salas, Emilio Haigh, Paul Anthony Marhuenda, Jaume Price, Alasdair B. Sibson, Philip Kennard, Jake E. Erven, Chris Rarity, John G. Thompson, Mark Gerard Lord, Andrew Nejabati, Reza Simeonidou, Dimitra Univ Bristol Fac Engn High Performance Networks Grp Bristol BS8 1UB Avon England UPM Ctr Computat Simulat Campus Montegancedo Madrid 28660 Spain Univ Bristol Dept Elect & Elect Engn High Performance Networks Grp Bristol BS8 1TH Avon England UCL Commun & Informat Syst Grp London WC1E 6BT England Univ Bristol Ctr Quantum Photon Sch Phys Bristol BS8 1TH Avon England Univ Bristol Quantum Engn Ctr Doctoral Training Bristol BS8 1TH Avon England BTDesign Polaris House Ipswich IP5 3RE Suffolk England

Quantum key distribution (QKD) is a state-of-theart method of generating cryptographic keys by exchanging single photons. Measurements on the photons are constrained by the laws of quantum mechanics, and it is fromthis that the keys derive their security. Current public key encryption relies on mathematical problems that cannot be solved efficiently using present-day technologies;however, it is vulnerable to computational advances. In contrast QKD generates truly random keys secured against computational advances and more general attacks when implemented properly. On the other hand, networks are moving towards a process of softwarizationwith the main objective to reduce cost in both, the deployment and in the network maintenance. This process replaces traditional network functionalities (or even full network instances) typically performed in network devices to be located as software distributed across commodity data centers. Within this context, network function virtualization (NFV) is a new concept in which operations of current proprietary hardware appliances are

关键词： network functions virtualization quantum key distribution software defined networking

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NFV and SDN-Based Differentiated Traffic Treatment for Residential networks

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IEEE ACCESS 2020年 8卷 34038-34055页

作者： Flores Moyano, Ricardo Fernandez, David Merayo, Noemi Lentisco, Carlos M. Cardenas, Andres Univ San Francisco Quito Dept Ingn Ciencias Computac Quito 170901 Ecuador Univ Politecn Madrid Dept Ingn Sistemas Telemat Madrid 28040 Spain Univ Valladolid Grp Comunicac Opt Valladolid 47002 Spain

Residential networks play a critical role in assuring that services or applications such as tele-work, tele-education, medical care, entertainment, home automation, among others, have the required resources to obtain an optimal performance. Although current residential gateways try to meet the Quality of Service (QoS) demands, the traditional networking paradigm does not have the appropriate mechanisms to address the heterogeneous and dynamic nature of the services running at home. In this context, a feasible solution consists of leveraging the flexibility and adaptability of the Software Defined networking (SDN) and network functions virtualization (NFV) paradigms to provide a differentiated traffic treatment intended to improve the QoS support of residential networks. The proposal takes advantage of the Service Function Chaining (SFC) concept intrinsic to NFV as well as the capacity of an SDN-based residential gateway to differentiate the traffic of a certain application. Thus, an association between an SFC and the differentiated traffic is stablished to apply a specific treatment. Besides, a comprehensive architecture composed of the software defined residential network (SDRN), the software defined access network (SDOAN) and the NFV-compliant ISP's edge cloud infrastructure is envisioned. This architecture would allow dramatically improving the life cycle management of the residential network from a centralized point which follows a user-centric approach.

关键词： Software defined networks network functions virtualization quality of service service function chaining residential network management applications

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Customizable Deployment of NFV Services

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JOURNAL OF network AND SYSTEMS MANAGEMENT 2021年第3期29卷 1-27页

作者： Fulber-Garcia, Vinicius Huff, Alexandre Marcuzzo, Leonardo da C. Luizelli, Marcelo C. Schaeffer-Filho, Alberto E. Granville, Lisandro Z. dos Santos, Carlos R. P. Duarte Junior, Elias P. Univ Fed Parana Curitiba Parana Brazil Fed Technol Univ Parana Curitiba Parana Brazil Univ Fed Santa Maria Santa Maria RS Brazil Fed Univ Pampa Alegrete Brazil Univ Fed Rio Grande do Sul Porto Alegre RS Brazil

network functions virtualization (NFV) promotes a paradigm shift in the core network, by enabling the execution of network functions on a virtualized software plane instead of on dedicated hardware. Despite its benefits, NFV introduces new challenges, of which we highlight those related to the deployment of virtualized network services. Current NFV deployment solutions (i.e., those for composition, embedding, and scheduling) are usually limited to optimize hard-coded criteria, and cannot be customized to address specific demands defined by both network operators and NFV-as-a-Service customers. In this paper, we present a customizable NFV deployment framework that allows multiple criteria and multiple objectives to be applied to service composition, embedding, and scheduling. We evaluate the proposed framework integrated to deployment solutions specified in the literature. A case study is presented for the customized deployment of a traffic control and security service, and demonstrates the flexibility and effectiveness of the proposed framework.

关键词： network functions virtualization network service Service function chain Framework Deployment Composition Embedding Scheduling

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Cost and Availability Aware Resource Allocation and Virtual Function Placement for CDNaaS Provision

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IEEE TRANSACTIONS ON network AND SERVICE MANAGEMENT 2018年第4期15卷 1334-1348页

作者： Yala, Louiza Frangoudis, Pantelis A. Lucarelli, Giorgio Ksentini, Adlen Univ Rennes 1 IRISA F-35042 Rennes France EURECOM Commun Syst Dept F-06904 Sophia Antipolis France Univ Grenoble Alpes CNRS INRIA LIG F-38000 Grenoble France Univ Lorraine LCOMS F-57000 Metz France

We address the fundamental tradeoff between deployment cost and service availability in the context of on-demand content delivery service provision over a telecom operator's network functions virtualization infrastructure. In particular, given a specific set of preferences and constraints with respect to deployment cost, availability and computing resource capacity, we provide polynomial-time heuristics for the problem of jointly deriving an appropriate assignment of computing resources to a set of virtual instances and the placement of the latter in a subset of the available physical hosts. We capture the conflicting criteria of service availability and deployment cost by proposing a multi-objective optimization problem formulation. Our algorithms are experimentally shown to outperform state-of-the-art solutions in terms of both execution time and optimality, while providing the system operator with the necessary flexibility to balance between conflicting objectives and reflect the relevant preferences of the customer in the produced solutions.

关键词： Content delivery networks cloud computing network functions virtualization resource allocation service availability VNF placement

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A Reliability-Aware, Delay Guaranteed, and Resource Efficient Placement of Service Function Chains in Softwarized 5G networks

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IEEE TRANSACTIONS ON CLOUD COMPUTING 2022年第3期10卷 1515-1531页

作者： Thiruvasagam, Prabhu Kaliyammal Kotagi, Vijeth J. Murthy, C. Siva Ram Indian Inst Technol Madras Chennai 600036 Tamil Nadu India

network functions virtualization (NFV) allows flexibility, scalability, agility, and easy manageability of networks by leveraging the features of virtualization and cloud computing technologies. However, softwarization of network functions imposes many challenges. Reliability and latency are major challenges in NFV-enabled 5G networks that can lead to customer dissatisfaction and revenue loss. In general, redundancy is used to improve the reliability of communication services. However, redundancy requires the same amount of additional resources and thus increases cost. In this article, we address the reliability-aware, delay guaranteed, and resource efficient Service Function Chain (SFC) placement problem in softwarized 5G networks. First, we propose a novel SFC subchaining method to enhance the reliability of an SFC without backups. If reliability requirement is not met after subchaining method, we add backups to VNFs to meet the reliability requirement. Then, we formulate the reliable SFC placement problem as an Integer Linear Programming (ILP) problem in order to solve it optimally. Owing to high computational complexity of the ILP problem for solving large input instances, we propose a modified stable matching algorithm to provide near-optimal solution in polynomial time. By extensive simulations we show that our proposed solutions consume lesser physical resources compared to state-of-the-art solutions for provisioning reliable communication services.

关键词： 5G network communication service network functions virtualization virtual network function service function chaining reliability resource management service level agreement SFC placement

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