NDLI: The impact of non-DS domains in a multi-domain DiffServ network

Content Provider	IEEE Xplore Digital Library
Author	Pei Zheng Ni, L.M.
Copyright Year	2002
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Michigan State Univ., USA (Pei Zheng)
Abstract	Differentiated Services (DiffServ) architecture has been proposed as a scheme to provide scalable end-to-end QoS by employing a simple classification based on the DSCP in IP header. One of the major reasons that hinder ISPs to provide DiffServ is that the service level cannot be guaranteed when a specific traffic flow traverses a number of DS and non-DS domains. The issue of the impact of non-DS domains or non-DS routers in a hybrid multi-domain DiffServ network on the performance of Premium Services and Assured Services has been largely ignored by the research community. In this paper, we first present a preliminary queueing analysis of the hybrid multidomain DiffServ network based on a tandem queue model. Then we propose a performance metric called SPI (Service Provision Index) to measure the service level degradation of preferred services in a hybrid multi-domain DiffServ network with respect to an All-DS network. Network simulations and emulations are conducted on a variety of scenarios with different parameter settings to explore the performance of a hybrid multi-domain DiffServ network. Based on the quantitative analysis, the simulation and emulation results, we make some observations on the underlying problem, which could help ISPs or researchers determine the major factors of service degradation, as well as possible directions to improve the services.
Sponsorship	IEEE COMSOC TCCC IBM AVAYA NOKIA Army Res. Lab. Florida Int. Univ. Miami-Dade Community College ETCOTA CITRIX AT&T Telecommun. & Inf. Technol. Inst
Starting Page	174
Ending Page	179
File Size	441161
Page Count	6
File Format	PDF
ISBN	078037553X
ISSN	10952055
DOI	10.1109/ICCCN.2002.1043063
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intelligent networks Traffic control Degradation Emulation Diffserv networks Queueing analysis Telecommunication traffic Analytical models Computer science Measurement
Content Type	Text
Resource Type	Article

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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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