Paper Info
Title
Tradeoff Study on Fault Tolerance Capacity and Resource Utilization for the Torus-Based Mission-Critical All-Optical WDM LANs.
Abstract
In this paper, we examine the tradeoff between fault tolerance capacity and protective (spare) wavelength utilization on a two-dimensional torus, which can be applied as a topological choice for the next-generation mission-critical Local Area Networks (LANs). The fault tolerance is enabled via applying a Four-way OptimaL Disjoint routing (FOLD) scheme to establish alternative (redundant) lightpaths. Along the spare wavelength utilization spectrum, four different Wavelength Allocation (WA) schemes, with varied spare resource demands, are studied and their wavelength efficiency in tolerating network failures is evaluated. The first WA scheme allocates no protective wavelength and hence provides zero fault tolerance capacity. The second and third WA schemes incorporate fault tolerance capability by enabling and allocating spare wavelengths, in a shared fashion, to redundant lightpaths at different levels of wavelength utilization. The fourth WA scheme allocates dedicated wavelengths to all alternative lightpaths such that no two redundant lightpaths need to share wavelength resources. A Monte-Carlo sampling assisted simulation on a 4x4 torus exhibits the performance-cost tradeoff and it is found that shared WA schemes achieve an appropriate balance between network reliability and spare resource utilization.
Year
DOI
Venue
2011
10.1109/GLOCOM.2011.6134429
GLOBECOM
Keywords
Field
DocType
Monte Carlo methods,fault tolerance,optical fibre LAN,resource allocation,sampling methods,telecommunication network reliability,wavelength assignment,Monte-Carlo sampling assisted simulation,fault tolerance capacity,four-way optimaL disjoint routing scheme,network reliability,next-generation mission-critical local area network,protective spare wavelength utilization,resource utilization,topological choice,torus-based mission-critical all-optical WDM LAN,two-dimensional torus,wavelength allocation scheme
Resource management,Wavelength-division multiplexing,Spare part,Computer science,Computer network,Real-time computing,Fault tolerance,Resource allocation,Local area network,Reliability (computer networking),Mission critical,Distributed computing
Conference
ISSN
Citations 
PageRank 
1930-529X
0
0.34
References 
Authors
4
2
Name
Order
Citations
PageRank
Dexiang Wang1534.38
Janise McNair236940.57