Title: Virtual networks dependability assessment framework

Authors: Baker Al-Rubaiey; Jemal H. Abawajy

Addresses: Faculty of Science, Engineering and Built Environment, Deakin University, Melbourne, Australia ' Faculty of Science, Engineering and Built Environment, Deakin University, Melbourne, Australia

Abstract: Advances in virtualisation technology have enabled the development of network virtualisation that complements server virtualisation by enabling continuous workload agility irrespective of the network addressing and protocol of the underlying physical network. Despite huge benefits both in cost and accessibility, network virtualisation is susceptible to failure due to a wide variety of factors. Therefore, dependability in a virtualised network environment is a significant issue that need to be addressed before the full benefits of network virtualisation can be exploited. In this paper, we propose a framework to estimate dependability risks in virtual network environments considering variations in the virtual network configurations. The proposed framework uses the reliability block diagram (RBD) and continuous time Markov chains (CTMC) to model and analyse the dependability level of a virtual network. The proposed framework is helpful to the design and construction of more dependable VNE.

Keywords: virtual networks; substrate networks; dependability risks; reliability; availability; network virtualisation; reliability block diagrams; RBD; continuous time Markov chains; CTMC modelling.

DOI: 10.1504/IJHPCN.2017.083193

International Journal of High Performance Computing and Networking, 2017 Vol.10 No.1/2, pp.3 - 12

Received: 09 Jun 2015
Accepted: 14 Jul 2015
Published online: 22 Mar 2017 *

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