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What is Network Functions Virtualization

Design Innovation and Network Architecture for the Future Internet
An architecture where functions are virtualized and instantiated as needed on an off-the-shelf high-end infrastructure.
Published in Chapter:
Future SDN-Based Network Architectures
Evangelos Haleplidis (University of Piraeus, Greece), Christos Tranoris (University of Patras, Greece), Spyros Denazis (University of Patras, Greece), and Odysseas Koufopavlou (University of Patras, Greece)
Copyright: © 2021 |Pages: 32
DOI: 10.4018/978-1-7998-7646-5.ch005
Abstract
The goal of this chapter is to provide a clear view of SDN, its origin, and its possible future. This chapter starts by taking a step backwards and looks at SDN in a historic perspective by visiting the history of network programmability and identifies how it helped pave the way and shape SDN. This historic journey will provide a general context of SDN and put SDN into perspective. Then the authors show the current view of SDN as defined by standard development organizations (SDOs), provide a sense of SDN's malleability, explore SDN interactions with different networking architectures, and finally, provide a vision of a possible SDN future.
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Slicing Challenges for Operators
Networking approach that envisages the instantiation of service functions on commodity hardware, breaking the traditional monolithic approach of functional software and hardware.
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Principles and Enabling Technologies of 5G Network Slicing
Software abstraction of network functions in next generation communications systems, which otherwise require dedicated hardware concerning traditional infrastructure.
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