Relevant bibliographies by topics / Virtualization of network functions

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'Virtualization of network functions'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Virtualization of network functions"

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MAKSYMYUK, Taras, Volodymyr ANDRUSHCHAK, Stepan DUMYCH, Bohdan SHUBYN, Gabriel BUGÁR, and Juraj GAZDA. "BLOCKCHAIN-BASED NETWORK FUNCTIONS VIRTUALIZATION FOR 5G NETWORK SLICING." Acta Electrotechnica et Informatica 20, no. 4 (2021): 54–59. http://dx.doi.org/10.15546/aeei-2020-0026.

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The paper proposes a new blockchain-based network architecture for 5G network functions virtualization. By using a combination of AI and blockchain technologies, proposed system provides flexible network deployment, interoperability between different mobile network operators and effective management of radio resources. Experimental testbed of the proposed system has been implemented by using cloud and edge computing infrastructure and software defined radio peripheral NI USRP 2900. Simulation results of the network slicing and radio resource management shows that proposed system is able to double the capacity of the physical network infrastructure, while ensuring the target quality of service for all users.
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Gil Herrera, Juliver de Jesus, and Juan Felipe Botero Vega. "Network Functions Virtualization: A Survey." IEEE Latin America Transactions 14, no. 2 (2016): 983–97. http://dx.doi.org/10.1109/tla.2016.7437249.

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Chatras, Bruno, and François Frédéric Ozog. "Network functions virtualization: the portability challenge." IEEE Network 30, no. 4 (2016): 4–8. http://dx.doi.org/10.1109/mnet.2016.7513857.

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Daghmehchi Firoozjaei, Mahdi, Jaehoon (Paul) Jeong, Hoon Ko, and Hyoungshick Kim. "Security challenges with network functions virtualization." Future Generation Computer Systems 67 (February 2017): 315–24. http://dx.doi.org/10.1016/j.future.2016.07.002.

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Niedermeier, Michael, and Hermann de Meer. "Constructing Dependable Smart Grid Networks using Network Functions Virtualization." Journal of Network and Systems Management 24, no. 3 (2016): 449–69. http://dx.doi.org/10.1007/s10922-016-9380-1.

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DJOMI, MANZILA IZNIARDI, RENDY MUNADI, and RIDHA MULDINA NEGARA. "Analisis Performansi Layanan FTP danVideo Streaming berbasis Network Function Virtualization menggunakan Docker Containers." ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika 6, no. 2 (2018): 180. http://dx.doi.org/10.26760/elkomika.v6i2.180.

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ABSTRAKInfrastruktur jaringan seperti router, secara tradisional menggunakan hardware yang bersifat proprietary. Teknologi virtualisasi pada fungsi jaringan atau NFV (Network Function Virtualization) membuat layanan ini dapat diimplementasikan sebagai aplikasi perangkat lunak yang dapat dijalankan di lingkungan virtual atau Virtualized Network Functions (VNFs). Selain menggunakan hypervisor (hardware-level virtualization), teknologi virtualisasi memiliki alternatif pengimplementasian dengan menggunakan teknologi containers (Operating system -level virtualization), salah satunya menggunakan Docker. Penelitian ini mengimplementasikan layanan FTP dan video streaming pada jaringan NFV di Docker Containers. Tanpa backgound traffic, layanan menunjukkan performansi QoS yang memenuhi standarisasi ITU-T G.1010 dengan delay FTP 0,12 ms dan delay video streaming 6,21 ms serta nilai packet loss kedua layanan sebesar 0%. Penggunaan CPU pada Docker ketika layanan dijalankan dibawah 1 %. Kata kunci: Virtualisasi, Containers, Docker, Network Function Virtualization, QoSABSTRACTNetwork infrastructure such as routers, traditionally using proprietary hardware. Virtualization technology on network function or NFV (Network Function Virtualization) makes this service can be implemented as a software application that can run in virtual environment or Virtualized Network Functions (VNFs). In addition to using hypervisor (hardware-level virtualization), virtualization technology has an alternative implementation using containers technology (Operating system-level virtualization), one of them using Docker. This research implements FTP and video streaming services on NFV networks in Docker Containers. Without background traffic, the service demonstrates QoS performance that meets the ITU-T G.1010 standardization with 0.12 ms FTP delay and 6.21 ms video streaming delay and with packet loss value of both services at 0%. CPU usage on Docker when service runs below 1%.Keywords: Virtualization, Containers, Docker, Network Function Virtualization, QoS
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Miyamura, Takashi, Akira Misawa, and Jun-ichi Kani. "Highly efficient optical aggregation network with network functions virtualization." International Journal of Network Management 29, no. 2 (2018): e2052. http://dx.doi.org/10.1002/nem.2052.

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Pencheva, Evelina, Ivaylo Atanasov, and Ventsislav Trifonov. "Towards Intelligent, Programmable, and Open Railway Networks." Applied Sciences 12, no. 8 (2022): 4062. http://dx.doi.org/10.3390/app12084062.

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The virtualization and automation of network functions will be key features of future high-speed railway networks, which have to provide dependable, safe, and secure services. The virtualization of railway network functions will enable functions such as train control, train integrity protection, shunting control, and trackside monitoring and maintenance to be virtualized and to be run on general-purpose hardware. Network function virtualization combined with edge computing can deliver dynamic, low-latency, and reliable services. The automation of railway operations can be achieved by embedding intelligence into the network to optimize the railway operation performance and to enhance the passenger experience. This paper presents an innovative railway network architecture that features distributed intelligence, function cloudification and virtualization, openness, and programmability. The focus is on time-tolerant and time-sensitive intelligent services designed to follow the principles of service-oriented architecture. The interaction between identified logical identities is illustrated by use cases. The paper provides some details of the design of the interface between distributed intelligent services and presents the results of an emulation of the interface performance.
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Ma, Shicong, Baosheng Wang, Xiaozhe Zhang, and Xianming Gao. "ApplianceBricks: a scalable network appliance architecture for network functions virtualization." China Communications 13, Supplement 1 (2016): 32–42. http://dx.doi.org/10.1109/cc.0.7560893.

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Mijumbi, Rashid, Joan Serrat, Juan-luis Gorricho, Steven Latre, Marinos Charalambides, and Diego Lopez. "Management and orchestration challenges in network functions virtualization." IEEE Communications Magazine 54, no. 1 (2016): 98–105. http://dx.doi.org/10.1109/mcom.2016.7378433.

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Dissertations / Theses on the topic "Virtualization of network functions"

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Sällberg, Kristian. "A Data Model Driven Approach to Managing Network Functions Virtualization : Aiding Network Operators in Provisioning and Configuring Network Functions." Thesis, KTH, Radio Systems Laboratory (RS Lab), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171233.

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This master’s thesis explains why certain network services are difficult to provision and configure using IT automation and cloud orchestration software. An improvement is proposed and motivated. This proposed improvement enables network operators to define a set of data models describing how to provision and interconnect a set of Virtual Network Functions (VNFs) (and possibly existing physical network functions) to form networks. Moreover, the proposed solution enables network operators to change the configuration at runtime. The work can be seen as a step towards self managing and auto scaling networks. The proposed approach is compared to a well known cloud management system (OpenStack) in order to evaluate if the proposed approach decreases the amount of time needed for network operators to design network topologies and services containing VNFs. Data is collected through observations of network operators, interviews, and experiment. Analysis of this data shows that the proposed approach can decrease the amount of time required for network operators to design network topologies and services. This applies if the network operators are already acquainted with the data modeling language YANG. The amount of time required to provision VNFs so that they respond to connections can also be decreased using the proposed approach. The proposed approach does not offer as much functionality as OpenStack, as it is limited to VNF scenarios.<br>Denna masteruppsats förklarar varför vissa nätverkstjänster är svåra att skapa och konfigurera med IT-automationsverktyg och mjukvara för molnorkestrering.  En förbättring föreslås och motiveras. Den föreslagna förbättringen tillåter nätverksoperatörer att definiera en mängd datamodeller, för att beskriva hur Virtuella Nätverksfunktioner (VNF:er) skall instantieras och kopplas ihop till nätverkstjänster. Dessutom tillåter lösningen nätverksoperatörer att ändra konfiguration under tiden nätverken hanterar trafik.  Arbetet kan ses som ett steg mot självhanterande och automatiskt skalande nätverk. Den föreslagna lösningen jämförs med ett välkänt molnorkestreringsverktyg (OpenStack) för att utvärdera om den föreslagna lösningen sänker mängden tid som nätverksoperatörer behöver för att designa nätverkstopologier och tjänster som innehåller VNF:er. Data samlas in genom observationer av nätverksoperatörer, intervjuer, och experiment. Analys av datan visar att den föreslagna lösningen kan minska tiden som behövs för att designa nätverkstopologier och tjänster. Fallen där detta är applicerbart, är när VNF:er närvarar i nätverk. Dessa är enklare att skapa, konfigurera, och ändra under tiden de exekverar, med den föreslagna metoden. Detta kräver också att nätverksoperatören är bekant med datamodelleringsspråket YANG. Tiden det tar att provisionera VNF:er, tills dess att de svarar till anslutningar, kan sänkas med hjälp av den föreslagna metoden. Den förslagna metoden erbjuder väsentligt begränsad funktionalitet jämfört med OpenStack, den fokuserar på att hantera VNF:er.
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BARRETO, Jymmy Paul Souza. "Composição de serviços em network function virtualization." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/25845.

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Submitted by Pedro Barros (pedro.silvabarros@ufpe.br) on 2018-08-15T19:52:51Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) DISSERTAÇÃO Jymmy Paul Souza Barreto.pdf: 1650520 bytes, checksum: 9b58d6df9ea35f93b7083597ff86ca77 (MD5)<br>Approved for entry into archive by Alice Araujo (alice.caraujo@ufpe.br) on 2018-08-24T18:49:13Z (GMT) No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) DISSERTAÇÃO Jymmy Paul Souza Barreto.pdf: 1650520 bytes, checksum: 9b58d6df9ea35f93b7083597ff86ca77 (MD5)<br>Made available in DSpace on 2018-08-24T18:49:13Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) DISSERTAÇÃO Jymmy Paul Souza Barreto.pdf: 1650520 bytes, checksum: 9b58d6df9ea35f93b7083597ff86ca77 (MD5) Previous issue date: 2016-09-14<br>O paradigma Virtualização de Funções de Rede (NFV) atraiu rapidamente o interesse dos provedores de serviços de comunicações como um meio de acelerar a entrega dos serviços e, ao mesmo tempo, reduzir os custos associados. Inúmeros fatores trouxeram boas razões para esta causa, tais como: baixo custo de operação e energia, menor tempo de implementação de novas tecnologias para o mercado, gerenciamento escalável e dinâmico de serviços de rede e disponibilidade de compartilhamento de recursos de rede por meio de serviços e diferentes plataformas. Complementar à promessa das Redes Definidas por Software (SDN) de automatizar a orquestração e configuração da rede, NFV propõe automatizar a implantação e controle de funções de rede, as quais serão executadas em plataformas com servidores virtualizados. No mundo da SDN e da NVF, pode-se ter milhares de instâncias de um elemento, juntas, formando os componentes da rede. Se um deles falhar, perde-se um pouco da capacidade mas não se perde o elemento inteiro e pode-se recriar esse componente. A nova arquitetura pressupõe a criação de uma cadeia de serviço, ou seja, um conjunto de máquinas virtuais alinhadas para criar um serviço. Tanto pode ser de firewall como de detecção de intrusões, ou de outros elementos da rede. Neste contexto, desafios se tornam inerentes a esta proposta, os quais abordam tópicos como interoperabilidade de plataformas de rede, perda ou ganho de desempenho, segurança e resiliência. Assim, esse trabalho propõe avaliar o desempenho de composição de serviços utilizando um ambiente de NFV. Para isso, foram construídos vários cenários e usadas diferentes topologias a fim de validar um simulador que possa ser usado posteriormente por outros usuários como uma ferramenta útil para a composição de serviços em ambiente de NFV.<br>The Network Functions Virtualization (NFV) paradigm quickly attracted the interest of communications service providers as a means to accelerate the delivery of services and at the same time reducing the associated costs. Several factors have brought good reasons for this cause, such as operating and energy costs, implementation time of new technologies to market, scalable and dynamic management of network services and network resource sharing availability through different services and platforms. Complementary to the promise of Software-Defined Networking (SDN) to automate the orchestration and network configuration, NFV proposes automate the deployment and control of network functions, which will be run on platforms with virtualized servers. In the world of SDN and NVF, can have thousands of instances of an element, together forming network components. If one fails, you lose some of the ability but do not lose the whole element and can recreate this component. The new architecture involves creating a service string, i.e., a set of virtual machines aligned to create a service. Both can be firewall or intrusion detection, or other network elements. In this context, challenges become inherent in this proposal, which address topics such as interoperability of network platforms, trade-offs of performance, security and resilience. Thus, this work proposes to evaluate the performance of service composition using a NFV. For this, they were built several scenarios and used different topologies to validate a simulator that can later be used by other users as a useful tool for service composition in NFV.
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HE, FUJUN. "Reliable Resource Allocation Models in Network Virtualization." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/259077.

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京都大学<br>0048<br>新制・課程博士<br>博士(情報学)<br>甲第22809号<br>情博第739号<br>新制||情||126(附属図書館)<br>京都大学大学院情報学研究科通信情報システム専攻<br>(主査)教授 大木 英司, 教授 守倉 正博, 教授 原田 博司<br>学位規則第4条第1項該当<br>Doctor of Informatics<br>Kyoto University<br>DFAM
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Hsieh, Cheng-Liang. "Design and Implementation of Scalable High-Performance Network Functions." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/dissertations/1416.

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Service Function Chaining (SFC) enriches the network functionalities to fulfill the increasing demand of value-added services. By leveraging SDN and NFV for SFC, it becomes possible to meet the demand fluctuation and construct a dynamic SFc. However, the integration of SDN with NFV requires packet header modifications, generates excessive network traffics, and induces additional I/O overheads for packet processing. These additional overheads result in a lower system performance, scalability, and agility. To improve the system performance, a co-optimized solution is proposed to implemented NF to achieve a better performance for software-based network functions. To improve the system scalability, a many-field packet classification is proposed to support a more complex ruleset. To improve the system agility, a network function-enabled switch is proposed to lower the network function content switching time. The experiment results show that the performance of a network function is improved by 8 times by leveraging GPU as a parallel computation platform. Moreover, the matching speed to steer network traffics with many-field ruleset is improved by 4 times with the proposed many-field packet classification algorithm. Finally, the proposed system is able to improve system bandwidth 5 times better compared the native solution and maintain the content switch time with the proposed SFC implementation using SDN and NFV.
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Nobach, Leonhard [Verfasser], Ralf [Akademischer Betreuer] Steinmetz, and Wolfgang [Akademischer Betreuer] Kellerer. "Seamless Flexibility in High-Performance Network Functions Virtualization / Leonhard Nobach ; Ralf Steinmetz, Wolfgang Kellerer." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2018. http://d-nb.info/117198815X/34.

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Alleg, Abdelhamid. "Service Function Placement and Chaining in Network Function Virtualization Environments." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0117.

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L'émergence de la technologie de virtualisation des fonctions réseau (NFV) a suscité un vif intérêt autour de la conception, la gestion et le déploiement de services réseau de manière flexible, automatisée et indépendante du fournisseur. La mise en œuvre de la technologie NFV devrait être une solution profitable pour les fournisseurs de services et les clients. Cependant, ce changement de paradigme, amorcé par NFV, nécessite un abandon progressif des services réseau fournis à travers des équipements dédiés. En contrepartie, un environnement totalement ou partiellement virtualisé est proposé pour instancier dynamiquement et à la demande des modules logiciels appelés fonctions de réseau virtuelles (VNF). Cette évolution soulève un ensemble de défis liés au déploiement et à l'exploitation de services, tels que l'orchestration et la gestion, la résilience des services, le contrôle de la qualité de service (QoS), l’approvisionnement des ressources, etc. En outre, la question centrale à résoudre dans le contexte NFV est la suivante : « comment placer et chaîner effacement des fonctions virtuelles d’un service afin de fournir un niveau de qualité demandé par le client tout en optimisant l'utilisation des ressources par le fournisseur de services ? ”.Ainsi, cette thèse étudie la problématique du placement et du chaînage des VNF en tenant compte de certaines exigences de service telles que le délai de bout en bout, la disponibilité du service et la consommation d'énergie, et propose un ensemble d'algorithmes et de mécanismes visant à optimiser le déploiement des services demandés/fournis. Nos contributions dans cette thèse sont triples. Premièrement, nous proposons deux algorithmes de placement et de chaînage de VNF sensibles au délai de bout-en-bout pour des applications temps-réel. Les algorithmes proposés visent à respecter le délai approprié de bout-en-bout qui dépend du service déployé (exemples : VoIP, Streaming, etc.). Deuxièmement, nous présentons une analyse comparative de la disponibilité des services et nous proposons deux mécanismes de placement et de chaînage de VNF pour garantir un niveau prédéfini de disponibilité. L’objectif est de fournir des services résilients en ajustant avec précision les paramètres du schéma de protection (nombre, type, emplacement et taille des instances VNF) nécessaires pour atteindre ce niveau de disponibilité en dépit des défaillances du réseau. Enfin, nous proposons une architecture générale qui explore la possibilité d’étendre le paradigme de la virtualisation à l’Internet des objets (IoT). À cette fin, nous définissons un mécanisme de placement et de chaînage respectant les contraintes énergétiques pour des services IoT. Notre architecture propose de découpler et de virtualiser les fonctionnalités inhérentes à un objet connecté de l’équipement IoT physique. En étendant NFV au domaine IoT, notre solution ouvre de nouvelles perspectives d’application en supportant de nouveaux cas d’usages<br>The emergence of Network Function Virtualization (NFV) technology has aroused keen interest to design, manage and deploy network services in a flexible, automated and vendor-agnostic manner. Implementing NFV technology is expected to be a win-win solution for both service providers and costumers. However, this paradigm shift, sparked by NFV, calls for a progressive abandon of network services that are provided as hardware appliance and rather it proposes a fully or partially virtualized environment that offers software modules called Virtual Network Functions (VNFs). This shift rises a set of challenges related to service deployment and operation such as orchestration and management, service resiliency, Quality of Service (QoS) and resource provisioning among others. Furthermore, the core question that needs to be solved within NFV context is “What is the best way to place and chain VNFs that form a service in order to meet Service Level Agreement requirements (costumer side) while optimizing resource usage (service provider side)?”.This thesis investigates the problem of VNF Placement and Chaining considering service requirements such as end-to-end delay, service availability and energy consumption and proposes a set of algorithms and mechanisms that aim to achieve an optimized deployment of the requested/provided services. Our contributions in this thesis are threefold. First, we propose a delay-aware Placement and Chaining algorithms for delay-sensitive applications over NFV networks. The proposed algorithms aim to meet the appropriate end-to-end delay defined according to the deployed service (VoIP, Streaming, etc.). Second, we provide a comprehensive service availability benchmarking and we propose two availability-aware mechanisms for VNFs chain. The aim is to provide resilient service provisioning by fine-tuning the parameters of the protection scheme (the number, the type, the placement and the size of the spare instances) needed to reach a predefined availability level, despite network failures. Finally, we propose a framework architecture that explores the possibility to extend the virtualization paradigm to Internet of Things (IoT). Toward this end, we define an energy-aware Placement and Chaining for IoT services where inherent IoT functionalities are decoupled from specific dedicated IoT devices and instantiated on-demand. By bringing together NFV and IoT paradigms, this extension opens new perspectives and push toward designing new use cases
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Montanari, Luca. "A Network Function Virtualization Architecture for Distributed IoT Gateways." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13345/.

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La virtualizzazione permette a diverse applicazioni di condividere lo stesso dispositivo IoT. Tuttavia, in ambienti eterogenei, reti di dispositivi IoT virtualizzati fanno emergere nuove sfide, come la necessità di fornire on-the-fly e in maniera dinamica, elastica e scalabile, gateway. NFV è un paradigma progettato per affrontare queste nuove sfide. Esso sfrutta tecnologie di virtualizzazione standard per consolidare specifici elementi di rete su generico hardware commerciale. Questa tesi presenta un'architettura NFV per gateway IoT distribuiti, nella quale istanze software dei moduli dei gateway sono ospitate su un'infrastruttura NFV distribuita, la quale è operata e gestita da un IoT gateway Provider. Considereremo diversi IoT Provider, ciascuno con le proprie marche, o loro combinazioni, di sensori e attuatori/robot. Ipotizzeremo che gli ambienti dei provider siano geograficamente distribuiti, per un'efficiente copertura di regioni estese. I sensori e gli attuatori possono essere utilizzati da una varietà di applicazioni, ciascuna delle quali può avere diversi requisiti per interfacce e QoS (latenza, throughput, consumi, ecc...). L'infrastruttura NFV consente di effettuare un deployment elastico, dinamico e scalabile dei moduli gateway in questo ambiente eterogeneo e distribuito. Inoltre, l'architettura proposta è in grado di riutilizzare moduli il cui deployment è stato precedentemente compiuto. Ciò è ottenuto attraverso Service Function Chaining e un'orchestrazione dinamica a runtime. Infine, presenteremo un prototipo basato sulla piattaforma OpenStack.
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Gao, Meihui. "Models and Methods for Network Function Virtualization (NFV) Architectures." Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0025/document.

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Avec la croissance exponentielle des demandes de service, les opérateurs ont déployé de nombreux équipements, et par conséquent, la gestion du réseau est devenue de plus en plus difficile et coûteuse. La virtualisation des fonctions réseau (NFV) a été proposée comme un nouveau paradigme pour réduire les coûts liés à l’acquisition et à la maintenance pour les réseaux de télécommunications. Dans ce travail de thèse, nous nous intéressons aux problèmes du chaînage des fonctions virtuelles (VNFs) qui combinent des décisions de localisation des VNFs et de routage des demandes. D'un point de vue d'optimisation, ce problème est une combinaison des problèmes de localisation (pour la partie d'installation des VNFs) et de conception de réseaux (pour la partie de routage). Ces deux problèmes ont été largement étudié dans la littérature. Cependant, leur combinaison représente des divers challenges en termes de modélisation et de résolution. Dans la première partie de cette thèse, nous considérons une version réaliste du problème du chaînage des VNFs (VNF-PR) afin de comprendre l'impact des différents aspects sur les coûts et les performances de gestion du réseau. Dans ce but, nous étendons le travail dans~\cite{Addis2015} en considérant des caractéristiques et des contraintes plus réalistes des infrastructures NFV et nous proposons un modèle de programmation linéaire et une heuristique mathématique pour le résoudre. Dans le but de mieux comprendre la structure du problème et ses propriétés, la deuxième partie de la thèse est orientée vers l'étude théorique du problème, où nous avons étudié une version compacte du problème du chaînage des VNFs. Nous fournissons des résultats sur la complexité de calcul sous divers cas de topologie et de capacité. Ensuite, nous proposons deux modèles et nous les testons sur un testbed avec plus de 100 instances différentes avec différents cas de capacité. Au final, nous abordons la scalabilité du problème en proposant des méthodes constructives et des méthodes heuristiques basées sur la programmation linéaire entière pour traiter efficacement des instances de taille grande (jusqu'à 60 nœuds et 1800 demandes). Nous montrons que les heuristiques proposées sont capables de résoudre efficacement des instances de taille moyenne (avec jusqu'à 30 nœuds et 1 000 demandes) de cas de capacité difficiles et de trouver de bonnes solutions pour les instances dures, où le modèle ne peut fournir aucune solution avec un temps de calcul limité<br>Due to the exponential growth of service demands, telecommunication networks are populated with a large and increasing variety of proprietary hardware appliances, and this leads to an increase in the cost and the complexity of the network management. To overcome this issue, the NFV paradigm is proposed, which allows dynamically allocating the Virtual Network Functions (VNFs) and therefore obtaining flexible network services provision, thus reducing the capital and operating costs. In this thesis, we focus on the VNF Placement and Routing (VNF-PR) problem, which aims to find the location of the VNFs to allocate optimally resources to serve the demands. From an optimization point of view, the problem can be modeled as the combination of a facility location problem (for the VNF location and server dimensioning) and a network design problem (for the demands routing). Both problems are widely studied in the literature, but their combination represents, to the best of our knowledge, a new challenge. We start working on a realistic VNF-PR problem to understand the impact of different policies on the overall network management cost and performance. To this end, we extend the work in [1] by considering more realistic features and constraints of NFV infrastructures and we propose a linear programming model and a math-heuristic to solve it. In order to better understand the problem structure and its properties, in the second part of our work, we focus on the theoretical study of the problem by extracting a simplified, yet significant variant. We provide results on the computational complexity under different graph topology and capacity cases. Then, we propose two mathematical programming formulations and we test them on a common testbed with more than 100 different test instances under different capacity settings. Finally, we address the scalability issue by proposing ILP-based constructive methods and heuristics to efficiently deal with large size instances (with up to 60 nodes and 1800 demands). We show that our proposed heuristics can efficiently solve medium size instances (with up to 30 nodes and 1000 demands) of challenging capacity cases and provide feasible solutions for large size instances of the most difficult capacity cases, for which the models cannot find any solution even with a significant computational time
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Oliveira, Diogo. "Multi-Objective Resource Provisioning in Network Function Virtualization Infrastructures." Scholar Commons, 2018. http://scholarcommons.usf.edu/etd/7206.

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Network function virtualization (NFV) and software-dened networking (SDN) are two recent networking paradigms that strive to increase manageability, scalability, pro- grammability and dynamism. The former decouples network functions and hosting devices, while the latter decouples the data and control planes. As more and more service providers adopt these new paradigms, there is a growing need to address multi-failure conditions, particularly those arising from large-scale disaster events. Overall, addressing the virtual network function (VNF) placement and routing problem is crucial to deploy NFV surviv- ability. In particular, many studies have inspected non-survivable VNF provisioning, however no known work have proposed survivable/resilient solutions for multi-failure scenarios. In light of the above, this work proposes and deploys a survivable multi-objective provisioning solution for NFV infrastructures. Overall, this study initially proposes multi- objective solutions to eciently solve the VNF mapping/placement and routing problem. In particular, a integer linear programming (ILP) optimization and a greedy heuristic meth- ods try to maximize the requests acceptance rate while minimizing costs and implementing trac engineering (TE) load-balancing. Next, these schemes are expanded to perform \risk- aware" virtual function mapping and trac routing in order to improve the reliability of user services. Furthermore, additionally to the ILP optimization and greedy heuristic schemes, a metaheuristic genetic algorithm (GA) is also introduced, which is more suitable for large- scale networks. Overall, these solutions are then tested in idealistic and realistic stressor scenarios in order to evaluate their performance, accuracy and reliability.
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Kolluri, Saiphani Krishna Priyanka Kolluri. "APPLYING LEAN PRINCIPLES FOR PERFORMANCE ORIENTED SERVICE DESIGN OF VIRTUAL NETWORK FUNCTIONS FOR NFV INFRASTRUCTURE : Roles and Relationships." Thesis, Blekinge Tekniska Högskola, Institutionen för kommunikationssystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13357.

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Context. Network Function Virtualization was recently proposed by European Telecommunications Standards Institute (ETSI) to improve the network service flexibility by virtualization of network services and applications that run on hardware. To virtualize network functions, the software is decoupled from underlying physical hardware. NFV aims to transform industries by reducing capital investments on hardware by using commercial-of-the-shelf (COTS) hardware. NFV makes rapid innovative growth in telecom services through software based service deployment. Objectives. This thesis work aims to investigate how business organizations function and the roles in defining a service relationship model. The work also aims to define a service relationship model and to validate it via proof of concept using network function virtualization as a service. For this thesis, we finally apply lean principles for the defined service relationship model to reduce waste and investigate how lean benefits the model to be proven as performance service oriented. Methods. The essence of this work is to make a business organization lean by investigating its actions and applying lean principles. To elaborate, this thesis work involves in a research of papers from IEEE, TMF, IETF and Ericsson. It results in modelling of a PoC by following requirement analysis methodology and by applying lean principles to eliminate unnecessary processes which doesn’t add any value. Results. The results of the work include a full-fledged service relationship model that include three service levels with roles that can fit in to requirement specifications of NFV infrastructure. The results also show the service levels functionalities and their relationships between the roles. It has also been observed that the services that are needed to be standardized are defined with syntax for ways to describe network functions. It is observed that lean principles benefit the service relationship model from reducing waste factors and hereby providing a PoC which is performance service oriented. Conclusions. We conclude that roles defined are fit for the service relationship model designed. Moreover, we conclude that the model can hence contain the flow of service by standardizing the subservices and reducing waste interpreted with lean principles and there is a need for further use case proof of the model in full scale industry trials. It also concludes the ways to describe network functions syntax which follows lean principles that are essential to have them for the sub-services standardization. However, PoC defined can be an assurance to the NFV infrastructure.
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Books on the topic "Virtualization of network functions"

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Zhang, Ying. Network Function Virtualization: Concepts and Applicability in 5G Networks. John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119390633.

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Zaki, Yasir. Future Mobile Communications: LTE Optimization and Mobile Network Virtualization. Springer Fachmedien Wiesbaden, 2013.

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Azhar, Sayeed, ed. MPLS and next-generation networks: Foundations for NGN and enterprise virtualization. Cisco Press, 2005.

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International Telegraph and Telephone Consultative Committee. Study Group 18. Integrated services digital network (ISDN): Overall network aspects and functions, ISDN user-network interfaces; B-ISDN user-network interface. International Telecommunication Union, 1991.

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International Telegraph and Telephone Consultative Committee. Study Group 18. Integrated services digital network (ISDN): Overall network aspects and functions, ISDN user-network interfaces; B-ISDN general network aspects. International Telecommunication Union, 1991.

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Narayanan, H. Submodular functions and electrical networks. Elsevier, 1997.

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Running Xen: A hands-on guide to the art of virtualization. Prentice Hall, 2008.

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International Telegraph and Telephone Consultative Committee. Study Group 18. Integrated services digital network (ISDN): Overall network aspects and functions, ISDN user-network interfaces; B-ISDN functional architecture. International Telecommunication Union, 1991.

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18, International Telegraph and Telephone Consultative Committee Study Group. Integrated services digital network (ISDN): Overall network aspects and functions, ISDN user-network interfaces; B-ISDN user-network interface - physical layer specification. International Telecommunication Union, 1991.

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International Telegraph and Telephone Consultative Committee. Study Group 18. Integrated services digital network (ISDN): Overall network aspects and functions, ISDN user-network interfaces; B-ISDN ATM layer specification. International Telecommunication Union, 1991.

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Book chapters on the topic "Virtualization of network functions"

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Medamana, John, and Tom Siracusa. "Network Functions Virtualization." In Building the Network of the Future. Chapman and Hall/CRC, 2017. http://dx.doi.org/10.1201/9781315208787-3.

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Stiegler, Greg, and John DeCastra. "Network Functions Virtualization Infrastructure." In Building the Network of the Future. Chapman and Hall/CRC, 2017. http://dx.doi.org/10.1201/9781315208787-4.

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Ali, Syed Riffat. "Network Function Virtualization." In Signals and Communication Technology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01647-0_5.

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Cao, Haotong. "Network Function Virtualization." In Internet of Things. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-89328-6_8.

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Ocampo, Andrés F., Juliver Gil-Herrera, Pedro H. Isolani, et al. "Optimal Service Function Chain Composition in Network Functions Virtualization." In Lecture Notes in Computer Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60774-0_5.

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Vaezi, Mojtaba, and Ying Zhang. "Virtualizing the Network Services: Network Function Virtualization." In Wireless Networks. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54496-0_4.

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Smine, Manel, David Espes, Nora Cuppens-Boulahia, and Frédéric Cuppens. "Network Functions Virtualization Access Control as a Service." In Data and Applications Security and Privacy XXXIV. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-49669-2_6.

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Fernández-Nandín, Abel, Felipe Gil-Castiñeira, and Francisco J. González-Castaño. "ONAP Architectures for Network Function Virtualization." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-05195-2_7.

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Sharma, Khem Prosad, and Arup Bhattacharjee. "Placement Issues in Network Function Virtualization." In Communications in Computer and Information Science. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6318-8_47.

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Ruseva, Stela, Rumyana Antonova, and Nikola Naidenov. "Open Platform for Network Functions Virtualization in the Digital Era." In Smart Technologies and Innovation for a Sustainable Future. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01659-3_32.

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Conference papers on the topic "Virtualization of network functions"

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Castillo-Lema, José, Augusto José Venâncio Neto, Flavio de Oliveira Silva, and Sergio Takeo Kofuji. "Network Function Virtualization in Content-Centric Networks." In X Workshop de Pesquisa Experimental da Internet do Futuro. Sociedade Brasileira de Computação - SBC, 2019. http://dx.doi.org/10.5753/wpeif.2019.7696.

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Network Functions Virtualization (NFV) offers an alternative way to design, deploy, and manage networking functions and services by leveraging virtualization technologies to consolidate network functions into general-purpose hardware platforms. On the past years extensive effort has been made to evolve and mature NFV tecnologies over IP networks. However, little or no attempts at all have been made to incorporate NFV into Information-Centric Networks (ICN). This work explores the use and implementation of virtual Network Funtions (VNFS)in Content-Centric Networks (CCN), and proposes the use of the Named Function Networking (NFN) paradigm as means to implement network functions and services in this kind of networks, distributing the network functions and services through the networks nodes and providing flexibility to dynamically place functions in the network as required and without the need of a central controller.
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Raza, Muhammad Taqi, Dongho Kim, Kyu-Han Kim, Songwu Lu, and Mario Gerla. "Rethinking LTE network functions virtualization." In 2017 IEEE 25th International Conference on Network Protocols (ICNP). IEEE, 2017. http://dx.doi.org/10.1109/icnp.2017.8117554.

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Fernandez, Eduardo B., and Brahim Hamid. "A pattern for network functions virtualization." In EuroPLoP 2015: 20th European Conference on Pattern Languages of Programs. ACM, 2015. http://dx.doi.org/10.1145/2855321.2855369.

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Repetto, M., A. Carrega, and G. Lamanna. "Towards Novel Security Architectures for Network Functions Virtualization." In 2019 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN). IEEE, 2019. http://dx.doi.org/10.1109/nfv-sdn47374.2019.9040068.

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Makaya, Christian, and Douglas Freimuth. "Automated virtual network functions onboarding." In 2016 IEEE Conference on Network Function Virtualization and Software-Defined Networks (NFV-SDN). IEEE, 2016. http://dx.doi.org/10.1109/nfv-sdn.2016.7919499.

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Kolias, Christos. "Network Functions Virtualization: Challenges, Vision and Action." In Optical Fiber Communication Conference. OSA, 2013. http://dx.doi.org/10.1364/ofc.2013.om3e.4.

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Pham, Tuan-Minh, Thi-Thuy-Lien Nguyen, Serge Fdida, and Huynh Thi Thanh Binh. "Online load balancing for Network Functions Virtualization." In 2017 IEEE International Conference on Communications (ICC). IEEE, 2017. http://dx.doi.org/10.1109/icc.2017.7996511.

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Nguyen, Thi-Thuy-Lien, Tuan-Minh Pham, and Huynh Thi Thanh Binh. "Adaptive multipath routing for network functions virtualization." In SoICT '16: Seventh International Symposium on Information and Communication Technology. ACM, 2016. http://dx.doi.org/10.1145/3011077.3011123.

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Park, Younghee, Pritesh Chandaliya, Akshaya Muralidharan, Nikash Kumar, and Hongxin Hu. "Dynamic Defense Provision via Network Functions Virtualization." In CODASPY '17: Seventh ACM Conference on Data and Application Security and Privacy. ACM, 2017. http://dx.doi.org/10.1145/3040992.3041005.

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Xie, Li-Jun, Qiao Zhou, and Jian-Yang Huang. "Dynamic Service Chain Migration for Network Functions Virtualization." In 2017 International Conference on Network and Information Systems for Computers (ICNISC). IEEE, 2017. http://dx.doi.org/10.1109/icnisc.2017.00027.

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Reports on the topic "Virtualization of network functions"

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Rahman, A., P. Aranda, and P. Lynch. Network Virtualization Research Challenges. RFC Editor, 2019. http://dx.doi.org/10.17487/rfc8568.

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Gross, J., I. Ganga, and T. Sridhar, eds. Geneve: Generic Network Virtualization Encapsulation. RFC Editor, 2020. http://dx.doi.org/10.17487/rfc8926.

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Black, D., L. Fang, L. Kreeger, and M. Napierala. Problem Statement: Overlays for Network Virtualization. Edited by T. Narten and E. Gray. RFC Editor, 2014. http://dx.doi.org/10.17487/rfc7364.

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Lasserre, M., F. Balus, T. Morin, N. Bitar, and Y. Rekhter. Framework for Data Center (DC) Network Virtualization. RFC Editor, 2014. http://dx.doi.org/10.17487/rfc7365.

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Garg, P., and Y. Wang, eds. NVGRE: Network Virtualization Using Generic Routing Encapsulation. RFC Editor, 2015. http://dx.doi.org/10.17487/rfc7637.

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Li, Y., D. Eastlake, L. Kreeger, T. Narten, and D. Black. Split Network Virtualization Edge (Split-NVE) Control-Plane Requirements. RFC Editor, 2018. http://dx.doi.org/10.17487/rfc8394.

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Yong, L., L. Dunbar, M. Toy, A. Isaac, and V. Manral. Use Cases for Data Center Network Virtualization Overlay Networks. RFC Editor, 2017. http://dx.doi.org/10.17487/rfc8151.

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Bitar, N., R. Shekhar, J. Uttaro, and W. Henderickx. A Network Virtualization Overlay Solution Using Ethernet VPN (EVPN). Edited by A. Sajassi and J. Drake. RFC Editor, 2018. http://dx.doi.org/10.17487/rfc8365.

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Ghanwani, A., L. Dunbar, M. McBride, V. Bannai, and R. Krishnan. A Framework for Multicast in Network Virtualization over Layer 3. RFC Editor, 2018. http://dx.doi.org/10.17487/rfc8293.

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Black, D., J. Hudson, L. Kreeger, M. Lasserre, and T. Narten. An Architecture for Data-Center Network Virtualization over Layer 3 (NVO3). RFC Editor, 2016. http://dx.doi.org/10.17487/rfc8014.

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