NDLI: Connection availability analysis of span-restorable mesh networks

Content Provider	Springer Nature Link
Author	Zhou, Ling Held, Marcel Sennhauser, Urs
Copyright Year	2007
Abstract	Dual-span failures are the key factor of the system unavailability in a mesh-restorable network with full restorability of single-span failures. Availability analysis based on reliability block diagrams is not suitable to describe failures of mesh-restorable networks with widely distributed and interdependent spare capacities. Therefore, a new concept of restoration-aware connection availability is proposed to facilitate the analysis. Specific models of span-oriented schemes are built and analyzed. By using the proposed computation method and presuming dual-span failures to be the only failure mode, we can exactly calculate the average connection unavailability with an arbitrary allocation rule for spare capacity and no knowledge of any restoration details, or the unavailability of a specific connection with known restoration details. Network performance with respect to connection unavailability, traffic loss, spare capacity consumption, and dual failure restorability is investigated in a case study for an optical span-restorable long-haul network.
Starting Page	135
Ending Page	148
Page Count	14
File Format	PDF
ISSN	1387974X
Journal	Photonic Network Communications
Volume Number	14
Issue Number	2
e-ISSN	15728188
Language	English
Publisher	Springer US
Publisher Date	2007-07-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Connection unavailability Dual failure restorability Span restoration p-Cycles Characterization and Evaluation of Materials Electronic and Computer Engineering Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Computer Networks and Communications Electrical and Electronic Engineering Hardware and Architecture Software

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