NDLI: An efficient and practical layer-preference policy for routing in GMPLS networks

Content Provider	IEEE Xplore Digital Library
Author	Fodor, Peter Enyedi, Gabor Retvari, Gabor Cinkler, Tibor
Copyright Year	2008
Description	Author affiliation: Department of Telecommunications and Media Informatics, Budapest University of Technology and Economics, H-1117, Magyar Tudósok körútja 2., HUNGARY (Fodor, Peter; Enyedi, Gabor; Retvari, Gabor; Cinkler, Tibor)
Abstract	We address the problem of routing Label Switched Paths (LSPs) in multi-layer networks based on the Generalized MultiProtocol Label Switching (GMPLS) paradigm. In particular, we pursue strategies for choosing the appropriate layer to host a new LSP request, since choosing this policy has enormous impact on the eventual performance of the network. Therefore, we developed a mixed strategy, the Min-phys-hop routing and wavelength assignment algorithm, as a policy to govern the selection of the best layer of a multi-layer network in which to host new LSP requests. In this paper, we discuss the practical issues concerning the deployment of this algorithm in modern GMPLS networks. Firstly, we discuss the applicability of the algorithm with respect to the state-of-the-art GMPLS standards, above all, the GMPLS routing extensions to OSPF-TE. We also sketch two possible reference deployment scenarios. Secondly, we present simulation studies to demonstrate that (1) there does not exist a universally optimal static layer-preference policy and (2) the Min-phys-hop algorithm realizes an adequate heuristics even considering the realistic limitations of contemporary network devices. We found that the Min-phys-hop algorithm produces close-to-optimal blocking and resource consumption under almost all possible selections of input parameters, and this is regardless of the wavelength and Optical-Electrical-Optical (OEO) conversion capability present in the network.
Starting Page	1
Ending Page	10
File Size	314732
Page Count	10
File Format	PDF
ISBN	9789638111685
DOI	10.1109/NETWKS.2008.6231336
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-09-28
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Scientific Assoc for Infocom
Subject Keyword	Measurement Bandwidth Switches Routing Wavelength division multiplexing IP networks Standards
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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