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Future Internet 2016, 8(2), 24; doi:10.3390/fi8020024

A Service-Oriented Approach for Dynamic Chaining of Virtual Network Functions over Multi-Provider Software-Defined Networks

1
National Interuniversity Consortium for Telecommunications (CNIT), National Laboratory of Photonic Networks, via G. Moruzzi 1, 56124 Pisa, Italy
2
National Interuniversity Consortium for Telecommunications (CNIT), Research Unit at the University of Firenze, via S. Marta 3, 50139 Firenze, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Dino Giuli
Received: 23 February 2016 / Revised: 17 May 2016 / Accepted: 18 May 2016 / Published: 1 June 2016
(This article belongs to the Special Issue Ecosystemic Evolution Feeded by Smart Systems)
View Full-Text   |   Download PDF [2133 KB, uploaded 1 June 2016]   |  

Abstract

Emerging technologies such as Software-Defined Networks (SDN) and Network Function Virtualization (NFV) promise to address cost reduction and flexibility in network operation while enabling innovative network service delivery models. However, operational network service delivery solutions still need to be developed that actually exploit these technologies, especially at the multi-provider level. Indeed, the implementation of network functions as software running over a virtualized infrastructure and provisioned on a service basis let one envisage an ecosystem of network services that are dynamically and flexibly assembled by orchestrating Virtual Network Functions even across different provider domains, thereby coping with changeable user and service requirements and context conditions. In this paper we propose an approach that adopts Service-Oriented Architecture (SOA) technology-agnostic architectural guidelines in the design of a solution for orchestrating and dynamically chaining Virtual Network Functions. We discuss how SOA, NFV, and SDN may complement each other in realizing dynamic network function chaining through service composition specification, service selection, service delivery, and placement tasks. Then, we describe the architecture of a SOA-inspired NFV orchestrator, which leverages SDN-based network control capabilities to address an effective delivery of elastic chains of Virtual Network Functions. Preliminary results of prototype implementation and testing activities are also presented. The benefits for Network Service Providers are also described that derive from the adaptive network service provisioning in a multi-provider environment through the orchestration of computing and networking services to provide end users with an enhanced service experience. View Full-Text
Keywords: network function virtualization; software defined networking; service-oriented architecture; network service; service chaining; virtual network function network function virtualization; software defined networking; service-oriented architecture; network service; service chaining; virtual network function
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Martini, B.; Paganelli, F. A Service-Oriented Approach for Dynamic Chaining of Virtual Network Functions over Multi-Provider Software-Defined Networks. Future Internet 2016, 8, 24.

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