scholarly journals Provendo uma Infraestrutura de Software Fatiada, Isolada e Segura de Funções Virtuais através da Tecnologia de Corrente de Blocos

2019 ◽  
Author(s):  
Gabriel Antonio F. Rebello ◽  
Gustavo Camilo ◽  
Leonardo Silva ◽  
Lucas Guimarães ◽  
Lucas Airam C. de Souza ◽  
...  
Keyword(s):  
Software Defined Networking ◽  
Network Function Virtualization ◽  
Network Slicing ◽  
Network Function

As tecnologias de fatiamento da rede (Network Slicing), virtualização de funções de rede (Network Function Virtualization - NFV) e redes definidas por software (Software-Defined Networking - SDN) proveem serviços fim-a-fim ágeis e sob demanda. A identificação de uma função virtual defeituosa torna-se obrigatória, pois serviços alocam recursos em um ambiente distribuído e sem confiança entre os pares composto por múltiplos inquilinos e provedores de serviço concorrentes. Este artigo propõe e desenvolve uma arquitetura baseada em correntes de blocos para prover auditabilidade às operações de orquestração de fatias de rede. Um protótipo de um caso de uso foi desenvolvido e implementado utilizando a plataforma Hyperledger Fabric na qual cada fatia de rede opera sobre um canal isolado. Os resultados mostram que é possível prover segurança à criação de fatias de rede, mas que a obtenção de consenso e o número de transações requeridas pelas fatias de rede são um grande desafio.

scholarly journals Software Defined Networking and Network Function Virtualization for Service Providers using Network Slice AS a Service

2019 ◽  
Vol 9 (2) ◽  
pp. 733-737
Keyword(s):  
Service Providers ◽  
Software Defined Networking ◽  
Network Services ◽  
Network Function Virtualization ◽  
Use Case ◽  
Service Networks ◽  
Service Network ◽  
Network Slicing ◽  
Network Function ◽  
Shared Network

The traditional network is configured based on the prescribed network requirements. Sometimes the resources of the network are underutilized and at sometimes there may resource starvation because of the static configuration of the network. As against traditional network, which is operated either as dedicated network or as an overlay network, network services can be operated over a shared network infrastructure. Thus maximum resource utilization under minimal infrastructure cost can be achieved. The on-demand network requirement can be configured dynamically using network slice. The backbone of the rapidly evolving 5G technology is network slice and service networks can be benefited from it. Different network function for multiple tenants can be enabled customized using network slice with each slice operating independently. Network slice can be offered as a service to meet various requirements from the network slice tenant with different granularities. The Software Defined Networking and Network Function Virtualization are the enabling technologies for network slice. This paper discusses various network slicing use case requirements. And also OpenFlow based software defined network environment is simulated to validate the discussions. Experimental results show that the efficiency of the service network is maximized with improved reliability of service

scholarly journals On Blockchain-Based Cross-Service Communication and Resource Orchestration on Edge Clouds

Informatics ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 13
Author(s):  
Konstantinos Papadakis-Vlachopapadopoulos ◽  
Ioannis Dimolitsas ◽  
Dimitrios Dechouniotis ◽  
Eirini Eleni Tsiropoulou ◽  
Ioanna Roussaki ◽  
...  
Keyword(s):  
Network Function Virtualization ◽  
Network Resources ◽  
Service Orchestration ◽  
Network Slicing ◽  
Network Function ◽  
Resource Orchestration ◽  
Full Capacity ◽  
Cloud Datacenter ◽  
Set Up ◽  
The Internet Of Things

With the advent of 5G verticals and the Internet of Things paradigm, Edge Computing has emerged as the most dominant service delivery architecture, placing augmented computing resources in the proximity of end users. The resource orchestration of edge clouds relies on the concept of network slicing, which provides logically isolated computing and network resources. However, though there is significant progress on the automation of the resource orchestration within a single cloud or edge cloud datacenter, the orchestration of multi-domain infrastructure or multi-administrative domain is still an open challenge. Towards exploiting the network service marketplace at its full capacity, while being aligned with ETSI Network Function Virtualization architecture, this article proposes a novel Blockchain-based service orchestrator that leverages the automation capabilities of smart contracts to establish cross-service communication between network slices of different tenants. In particular, we introduce a multi-tier architecture of a Blockchain-based network marketplace, and design the lifecycle of the cross-service orchestration. For the evaluation of the proposed approach, we set up cross-service communication in an edge cloud and we demonstrate that the orchestration overhead is less than other cross-service solutions.

Virtualization Evolution

Web Services ◽  
2019 ◽  
pp. 1762-1789
Author(s):  
Harilaos Koumaras ◽  
Christos Damaskos ◽  
George Diakoumakos ◽  
Michail-Alexandros Kourtis ◽  
George Xilouris ◽  
...  
Keyword(s):  
Cloud Computing ◽  
Software Defined Networking ◽  
Telecommunications Industry ◽  
Network Function Virtualization ◽  
Future Perspectives ◽  
Network Function ◽  
Computing Paradigm ◽  
Cloud Networking

This chapter discusses the evolution of the cloud computing paradigm and its applicability in various sections of the computing and networking/telecommunications industry, such as the cloud networking, the cloud offloading, and the network function virtualization. The new heterogeneous virtualized ecosystem that is formulated creates new needs and challenges for management and administration at the network part. For this purpose, the approach of Software-Defined Networking is discussed and its future perspectives are further analyzed.

Exploring SDN & NFV in 5G Using ONOS & POX Controllers

2018 ◽  
Vol 10 (4) ◽  
pp. 46-60 ◽  
Author(s):  
Christos Bouras ◽  
Anastasia Kollia ◽  
Andreas Papazois
Keyword(s):  
Operating System ◽  
Mobile Networks ◽  
Data Center ◽  
Central Office ◽  
Software Defined Networking ◽  
Theoretical Research ◽  
Network Function Virtualization ◽  
Network Function ◽  
Cloud Networking ◽  
Experimental Findings

This article describes how novel functionalities will take advantage of the cloud networking and will gradually replace the existing infrastructure of mobile networks with a virtualized one. Two technologies, namely software defined networking (SDN) and network function virtualization (NFV), offer their important benefits and a combination of them is an answer to the demands raised, such as central office re-architected as a data center (CORD). Open network operating system (ONOS) and POX are SDN controllers and offer an option to combine SDN and NFV addressing many ongoing problems in the field of mobile networks. In this paper, technologies and both controllers are compared and contrasted. Indicative cases of topologies are simulated and help evaluating both controllers. According to the experimental findings, ONOS is one of the most important controllers for practical, theoretical, research and educational purposes, while POX is a useful and simpler controller for other educative applications.

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