NDLI: Effective Risk Assessment in Resilient Communication Networks

Content Provider	Springer Nature Link
Author	Rusek, Krzysztof Guzik, Piotr Chołda, Piotr
Copyright Year	2016
Abstract	The paper discusses business impact analysis in the context of resilient communication networks. It is based on the total (aggregated) penalty that may be paid by an operator when the services (identified with transport demands) provided are interrupted due to network failures. The level of penalty is expressed as a commonly accepted business risk measure, Value-at-Risk ( $$VaR$$ ). First, the main concern over $$VaR$$ , namely the theoretical lack of subadditivity, is discussed. The study shows that, in practice, disadvantages do not appear in resilient network design, and $$VaR$$ can be used without the need to apply more complex and less informative measures. Second, a method for calculating the upper bound of the total penalty is presented. The assessment is performed for unprotected and protected services with a broad variety of compensation policies used to translate technical loss to monetarily expressed penalty. The proposed bounds are experimentally shown to be effective in comparison with alternative calculation methods, and also in the case when some of the assumptions taken during the modelling stage are not met.
Starting Page	491
Ending Page	515
Page Count	25
File Format	PDF
ISSN	10647570
Journal	Journal of Network and Systems Management
Volume Number	24
Issue Number	3
e-ISSN	15737705
Language	English
Publisher	Springer US
Publisher Date	2016-04-12
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Availability Compensation policy Continuity Design Downtime Management Reliability Value-at-Risk Computer Communication Networks Computer Systems Organization and Communication Networks Communications Engineering, Networks Information Systems and Communication Service Operation Research/Decision Theory
Content Type	Text
Resource Type	Article
Subject	Strategy and Management Computer Networks and Communications Information Systems Hardware and Architecture

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