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Performance comparison of OBS and SONET in metropolitan ring networks

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4 Author(s)
Sheeshia, S. ; Dept. of Electr. Eng., State Univ. of New York, Buffalo, NY, USA ; Yang Chen ; Anand, Vishal ; Chunming Qiao

This paper explores the feasibility of deploying optical burst switching (OBS) in metropolitan area networks (MANs) as an alternative to synchronous optical network (SONET), over wavelength-division multiplexing. We present a comparison between two OBS architectures (with centralized and distributed scheduling schemes), SONET, and next-generation SONET (NG-SONET), respectively. We quantify some of the performance metrics such as end-to-end delay and loss rate when supporting Ethernet traffic in metro ring networks. Our simulation results show that OBS offers significant performance improvement over SONET and NG-SONET. In general, the OBS architecture with distributed scheduling has a superior delay performance, whereas the OBS architecture with centralized scheduling has a better loss metric.

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:22 ,  Issue: 8 )

Date of Publication:

Oct. 2004

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