Publication No 36404

Author(s)

Gauger, C.M.*; Köhn, M.*; Zhang, J.; Mukherjee, B.

Title

Network Performance of Optical Burst/Packet Switching: The Impact of Dimensioning, Routing and Contention Resolution

Methods

Network Planning; Traffic Engineering; Performance Evaluation

Keywords

PHOTONIC; WDM; ROUTING; NETWORK; NETWORK PLANNING; PERFORMANCE EVALUATION; BURST SWITCHING; CONTENTION

Abstract

Optical burst switching (OBS) and Optical packet switching (OPS) are highly dynamic transport network architectures for a future optical Internet. As they both rely on statistical multiplexing network dimensioning, routing, and efficient contention resolution are key issues in order to achieve a low burst loss probability. This paper first compares principal network dimensioning and fixed routing strategies in a US reference core network for the failure-free case and for selected single link failure cases. We show that dimensioning approaches, which take knowledge of traffic demands as well as of routing into account, combined with shortest path routing can achieve a better performance than uniform dimensioning with either shortest path or optimized explicit routing. However, for critical single link failure cases, the higher flexibility of explicit routing yields more homogeneous results. Then, we extend this comparison to alternative/deflection routing in the failure-free case. Finally, we present results for the impact of dimensioning in OBS/OPS networks which employ simple fiber-delay line buffers for contention resolution.

Year

2005

Reference entry

Gauger, C.M.; Köhn, M.; Zhang, J.; Mukherjee, B.
Network Performance of Optical Burst/Packet Switching: The Impact of Dimensioning, Routing and Contention Resolution
Beiträge zur 6. ITG Fachtagung Photonic Networks, Leipzig, May 2005

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