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Performance meets technology - an integrated evaluation of OBS nodes with FDL buffers

: Gauger, C.M.; Buchta, H.; Patzak, E.; Saniter, J.

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First International Workshop on Optical Burst Switching, WOBS 2003. CD-ROM : In conjunction with OptiComm 2003; 16 October 2003, Dallas, Texas, USA
Dallas, 2003
12 pp.
International Workshop on Optical Burst Switching (WOBS) <1, 2003, Dallas/Tex.>
Optical Networking and Communications (OptiComm) <4, 2003, Dallas/Tex.>
Conference Paper, Electronic Publication
Fraunhofer HHI ()

In this paper, we show the benefit of an integrated analysis of performance and technology, as both signal degradation and burst losses limit the effective throughput of optical burst switching nodes. The investigation covers the Tune-and- Select (TAS) base architecture as well as extensions with dedicated and shared FDL buffers. First, we describe these node architectures and the OBS reservation scheme considered. Then, we analyze OBS nodes separately from a performance and from a technological/signal degradation point of view. Finally, we present results from the integrated scalability analysis. It is shown that reducing burst loss probability by applying more complex FDL buffers yields smaller maximum throughput due to smaller OBS nodes and in total even a reduced effective throughput under dynamic traffic.