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Influence of Software and Hardware Failures with Imperfect Fault Coverage on PONs OPEX

Fernandez Fernandez, Alvaro; Stol, Norvald
Conference object, Journal article, Peer reviewed
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Åpne
ONDM15.pdf (8.383Mb)
Permanent lenke
http://hdl.handle.net/11250/2392016
Utgivelsesdato
2015
Metadata
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  • Institutt for informasjonssikkerhet og kommunikasjonsteknologi [1600]
  • Publikasjoner fra CRIStin - NTNU [20946]
Originalversjon
Fernandez Fernandez, Alvaro [Eds.] Proceedings of the 19th International Conference on Optical Network Design andModeling (ONDM 2015) p. 28-33, IEEE Communications Society, 2015   10.1109/ONDM.2015.7127269
Sammendrag
Passive Optical Networks (PONs) are one of the

preferred technologies to deploy

broadband access networks. As

time passes, end users presuppose network connectivity to be

always available, and expect PONs to be highly dependable. Yet

operators, from an economic view, are interested in the costs

related to failures. Thus, PONs dependability and associated

costs have been extensively studied, but only focusing on

hardware failures. Contrarily, this paper performs a thorough

analysis of the impact of software failures in failure-related costs.

Based on real empirical data, software failures are thoroughly

characterized and classified in four different categories according

to their severity. Also, the effect of software failures on the

behavior of PON’s fiber protection and recovery mechanisms is

detailed. Software failures are included into a Markov cost

model, implementing a comprehensive cost framework. This way,

the dependability-related costs of

PONs are analyzed, accounting

for hardware and software failures, as well as for the

consequences of software failures on well-known PON protection

mechanisms. Moreover, how the testing phase duration and user

profile (residential or business) impact these costs is pinpointed.
Utgiver
IEEE
Serie
Proceedings of the 19th International Conference on Optical Network Design and Modeling;ONDM 2015

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