NDLI: NOBS: an ns2 based simulation tool for performance evaluation of TCP traffic in OBS networks

Content Provider	Springer Nature Link
Author	Gurel, Guray Alparslan, Onur Karasan, Ezhan
Copyright Year	2007
Abstract	Performance evaluation of tcp traffic in obs networks has been under intensive study, since tcp constitutes the majority of Internet traffic. As a reliable and publicly available simulator, ns2 has been widely used for studying tcp/ip networks; however ns2 lacks many of the components for simulating optical burst switching networks. In this paper, an ns2 based obs simulation tool (nobs), which is built for studying burst assembly, scheduling and contention resolution algorithms in obs networks is presented. The node and link objects in obs are extended in nobs for developing optical nodes and optical links. The ingress, core and egress node functionalities are combined into a common optical node architecture, which comprises agents responsible for burstification, routing and scheduling. The effects of burstification parameters, e.g., burstification timeout, burst size and number of burstification buffers per egress node, on tcp performance are investigated using nobs for different tcp versions and different network topologies.L’évaluation de la performance d’un trafic tcp dans les réseaux à commutation optique de rafales est intensivement étudié puisque le trafic tcp constitue la plus grande partie du trafic de l’internet. Le simulateur ns2, fiable et accessible publiquement, a été largement utilisé pour étudier les réseaux tcp/ip, mais il ne dispose pas de nombreux composants nécessaires pour simuler les réseaux à commutation optique de rafales. L’article présente un outil de simulation fondé sur ns2, dénommé nobs, qui a été construit pour étudier les algorithmes destinés à l’assemblage des rafales, à la planification et à la résolution des conflits dans les réseaux à commutation de rafales. Les objets nœud et liaison sont étendus pour représenter des nœuds et liaisons optiques. Les fonctions de nœuds d’entrée, de cœur et de sortie sont combinées en une architecture commune de nœud optique, qui comprend les agents responsables pour l’assemblage des rafales, le routage et la planification. On étudie l’influence des paramètres tels que temporisation, taille des rafales et nombre de tempons d’assemblage par nœud d’entrée sur la performance pour différentes versions de tcp et différentes topologies de réseau.
Starting Page	618
Ending Page	637
Page Count	20
File Format	PDF
ISSN	00034347
Journal	Annales Des Télécommunications
Volume Number	62
Issue Number	5-6
e-ISSN	19589395
Language	French
Publisher	Springer-Verlag
Publisher Date	2007-01-01
Publisher Place	Milan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Télécommunication optique Commutation optique Commutation rafales Programme simulation Simulation numérique Internet tcp/ip Évaluation performance Multiplexage longueur onde. Communications Engineering, Networks Information Systems and Communication Service Signal, Image and Speech Processing Computer Communication Networks Information and Communication, Circuits R & D/Technology Policy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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