Dependability of the NFV orchestrator: State of the art and research challenges

Andres J. Gonzalez, Gianfranco Nencioni, Andrzej Kamisínski, Bjarne E. Helvik, Poul E. Heegaard

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

The introduction of network function virtualisation (NFV) represents a significant change in networking technology, which may create new opportunities in terms of cost efficiency, operations, and service provisioning. Although not explicitly stated as an objective, the dependability of the services provided using this technology should be at least as good as conventional solutions. Logical centralisation, off-the-shelf computing platforms, and increased system complexity represent new dependability challenges relative to the state of the art. The core function of the network, with respect to failure and service management, is orchestration. The failure and misoperation of the NFV orchestrator (NFVO) will have huge network-wide consequences. At the same time, NFVO is vulnerable to overload and design faults. Thus, the objective of this paper is to give a tutorial on the dependability challenges of the NFVO, and to give insight into the required future research. This paper provides necessary background information, reviews the available literature, outlines the proposed solutions, and identifies some design and research problems that must be addressed.

Original languageEnglish
Article number2830648
Pages (from-to)3307-3329
Number of pages23
JournalIEEE Communications Surveys and Tutorials
Volume20
Issue number4
DOIs
StatePublished - 1 Oct 2018
Externally publishedYes

Keywords

  • Cloud computing
  • Fault tolerance
  • Mano resilience
  • Nfv
  • Nfv dependability
  • Nfv mano
  • Nfv orchestrator
  • Nfv reliability

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