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Fast circuit switching for the next generation of high performance networks

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5 Author(s)
Bohm, C. ; Dept. of Teleinf., R. Inst. of Technol., Kista, Sweden ; Hidell, M. ; Lindgren, P. ; Ramfelt, L.
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Dynamic synchronous transfer mode (DTM) is a broadband network architecture based on fast circuit-switching augmented with dynamic reallocation of resources. It provides a service based on multicast, multirate channels with short setup delay and supports applications with real-time requirements on quality of service as well as applications with bursty, asynchronous traffic. The paper describes the DTM architecture and its distributed resource management scheme. Performance analysis results from network simulations are presented. The analysis is performed with respect to throughput and access delay for two network topologies: a dual bus and a grid of dual buses. The effects of varying user requirements, internode distances and transfer size are studied for uniform traffic patterns. The results indicate that the overhead for establishing channels is low (a few hundred microseconds), which gives a high degree of utilization even for short transfers. The analysis also shows that when channels are established very frequently, the signaling capacity limits the performance

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Selected Areas in Communications, IEEE Journal on  (Volume:14 ,  Issue: 2 )