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Proceedings Paper

Multicast traffic in a WDM-ring-based ATM switch
Author(s): Andrea G. Bianco; Andrea F. Fumagalli; Emilio Leonardi; Fabio Neri; S. Toniolo
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Paper Abstract

This paper presents a fault tolerant distributed ATM switch architecture based on wavelength division multiplexing. The switching fabric consists of an all-optical ring shared memory (possibly remotely located) switch ports. Input buffering is used to resolve cell conflicts. A number of scheduling strategies are proposed to control cell transmissions within the distributed switch, with particular attention given to efficiently handling multicast traffic, i.e., tightly controlling the delay jitter of output copies generated by the same input multicast cell, while achieving overall high throughput. These strategies exploit separate input queues in order to alleviate the throughput limitations of input queued switches due to the head-of-the- line blocking phenomenon. A simulation-based performance analysis of the proposed architecture is presented, taking as performance indices both the cell transfer delay and the multicast cell jitter. Results show that good performances can be achieved for both unicast and multicast traffic with the proposed algorithm.

Paper Details

Date Published: 13 December 1996
PDF: 12 pages
Proc. SPIE 2953, Broadband Strategies and Technologies for Wide Area and Local Access Networks, (13 December 1996); doi: 10.1117/12.261234
Show Author Affiliations
Andrea G. Bianco, Politecnico di Torino (Italy)
Andrea F. Fumagalli, Politecnico di Torino (Italy)
Emilio Leonardi, Politecnico di Torino (Italy)
Fabio Neri, Politecnico di Torino (Italy)
S. Toniolo, Politecnico di Torino (Italy)

Published in SPIE Proceedings Vol. 2953:
Broadband Strategies and Technologies for Wide Area and Local Access Networks
Roberto Vercelli, Editor(s)

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