Paper Info
Title
Multi-Layer Traffic Engineering Through Adaptive lambda-Path Fragmentation and De-fragmentation
Abstract
In Multi-Layer networks, where more than one layer is dynamic, i.e., connections are set up using not only the upper, e.g., IP layer but the underlying wavelength layer as well leads often to suboptimal performance due to long wavelength paths, that do not allow routing the traffic along the shortest path. The role of MLTE (Multi-Layer Traffic Engineering) is to cut these long wavelength paths into parts (fragments) that allow better routing at the upper layer (fragmentation), or to concatenate two or more fragments into longer paths (defragmentation) when the network load is low and therefore less hops are preferred. In this paper we present a new model (CC: Grooming Graph) and an algorithm for this model that supports Fragmentation and DeFragmentation of wavelength paths making the network always instantly adapt to changing traffic conditions. We introduce the notion of shadow capacities to model "lightpath tailoring". We implicitly assume that the wavelength paths carry such, e.g., IP traffic that can be interrupted for a few microseconds and that even allows minor packet reordering. To show the superior performance of our approach in various network and traffic conditions we have carried out an intensive simulation study.
Year
DOI
Venue
2006
10.1007/11753810_60
Lecture Notes in Computer Science
Keywords
DocType
Volume
adaptive multi-layer traffic engineering,grooming graph,wavelength path fragmentation and de-fragmentation
Conference
3976
ISSN
Citations 
PageRank 
0302-9743
0
0.34
References 
Authors
11
6
Name
Order
Citations
PageRank
Tibor Cinkler120225.97
PéTer Hegyi201.35
Márk Asztalos310810.94
Géza Geleji431.49
János Szigeti592.34
András Kern6143.97