NDLI: Load-Balanced Optical Switch for High-Speed Router Design

Content Provider	IEEE Xplore Digital Library
Author	Bing Hu Yeung, K.L.
Copyright Year	1983
Abstract	A hybrid electro-optic router is attractive, where packet buffering and table lookup are carried out in electrical domain and switching is done optically. In this paper, we propose a load-balanced optical switch (LBOS) fabric for a hybrid router. LBOS comprises N linecards connected by an N-wavelength WDM fiber ring. Each linecard i is configured to receive on channel λ_i. To send a packet, it can select and transmit on an idle channel based on where the packet goes. The packet remains in the optical domain all the way from input linecard to output linecard. Meanwhile, the loading in the ring network is perfectly balanced by spreading the packets for different destinations to use different wavelengths, and the packets for the same destination to use different time slots. With the pipelined operation of the LBOS, we show that LBOS can yield close-to-100% throughput performance. To address the ring-fairness problem under the inadmissible traffic patterns, an efficient throughput-fair scheduler is devised. To efficiently support multicast traffic, a simple multicast scheduler is also proposed. Finally, the linecard placement problem is investigated for further cutting down the average packet delay.
Sponsorship	IEEE Lasers and Electro-Optics Society Optical Society of America
Starting Page	1969
Ending Page	1977
Page Count	9
File Size	1071818
File Format	PDF
ISSN	07338724
Volume Number	28
Issue Number	13
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical switches Optical design Optical buffering High speed optical techniques Table lookup Optical packet switching Fabrics Wavelength division multiplexing Throughput Delay load-balanced optical switch Fiber ring network high-speed router
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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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