NDLI: A design for on-line virtual private networks (VPN) over optical WDM networks

Content Provider	IEEE Xplore Digital Library
Author	Yang Qin Bo Li Wee Liang Lim Soon Hoe Yeo
Copyright Year	2002
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore (Yang Qin)
Abstract	We explore the problem of designing on-line virtual private networks (VPN) over wavelength division multiplexing networks (WDM) to facilitate the guarantee of diverse quality of service (QoS) requirements of different traffic streams especially that with very stringent delay jitter requirement and that with bursty characteristic. Each VPN consists of different traffic streams with various quality sensitivity. The proposed QoS model provides three types QoS services for various VPNs, static, optical burst switching (OBS) and alternative VPNs. All the three types provide transmission in the optical core networks without any O/E/O conversion. The static type has a set of dedicated or shared lightpaths which have been pre-allocated and the traffic from this VPN has constant bit rate (CBR). The OBS type need to setup the lightpath using a so called optical burst switching (OBS) while a traffic stream with variable bit rate (VBR) request is occurring. The alternative one has to setup a lightpath based on two-way reservation protocols such as tell-and-wait (TAW) for the traffic with unspecified bit rate (UBR) or available bit rate (ABR). The proposed model is suitable for carrying the multimedia applications which have various sensitivity of delay and jitter. By employing dynamic VPNs directly over WDM layer, we can eliminate the often complex QoS related functions in the upper protocol layers, thus increase the overall communication efficiency. Furthermore, this could be the first step toward providing fine grained service over optical wide-area networks. In addition, we present preliminary results based on simulation and provide a network designer with a quantitative assessment of proportion for different traffic types with different QoS service requirements.
Starting Page	2782
Ending Page	2786
File Size	344125
Page Count	5
File Format	PDF
ISBN	0780376323
DOI	10.1109/GLOCOM.2002.1189136
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-11-17
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Virtual private networks Optical design Optical fiber networks WDM networks Quality of service Traffic control Telecommunication traffic Bit rate Optical sensors Wavelength division multiplexing
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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