scispace - formally typeset
Search or ask a question

Showing papers on "Banyan switch published in 1987"


Journal ArticleDOI
TL;DR: The Knockout Switch as discussed by the authors uses a fully interconnected switch fabric topology (i.e., each input has a direct path to every output) so that no switch blocking occurs where packets destined for one output interfere with (block or delay) packets going to different Outputs.
Abstract: A new, high-performance packet-switching architecture, called the Knockout Switch, is proposed. The Knockout Switch uses a fully interconnected switch fabric topology (i.e., each input has a direct path to every output) so that no switch blocking occurs where packets destined for one output interfere with (i.e., block or delay) packets going to different Outputs. It is only at each output of the switch that one encounters the unavoidable congestion caused by multiple packets simultaneously arriving on different inputs all destined for the same output. Taking advantage of the inevitability of lost packets in a packet-switching network, the Knockout Switch uses a novel concentrator design at each output to reduce the number of separate buffers needed to receive simultaneously arriving packets. Following the concentrator, a shared buffer architecture provides complete sharing of all buffer memory at each output and ensures that all packets are placed on the output line on a first-in first-out basis. The Knockout Switch architecture has low latency, and is self-routing and nonblocking. Moreover, its Simple interconnection topology allows for easy modular growth along with minimal disruption and easy repair for any fault. Possible applications include interconnects for multiprocessing systems, high-speed local and metropolitan area networks, and local or toll switches for integrated traffic loads.

589 citations


Journal ArticleDOI
TL;DR: In this article, a new wavelength division multiplexing (WDM) optical switch using an acoustooptic deflector (AOD) is presented, which requires minimal hardware and is highly applicable in high-speed signal switching.
Abstract: A new wavelength-division-multiplexing (WDM) optical switch using an acoustooptic deflector (AOD) is presented. This switch requires minimal hardware and is highly applicable in high-speed signal switching. Theoretical calculations based on the Gaussian beam approximation show that up to a 20 × 20 switch is possible using present technology. As a preliminary study, a 3 × 3 WDM switch is constructed. Crosstalk of this switch is found to be less than -20 dB, and a 500 Mbit/s return to zero (RZ) signal is successfully switched with a 4-μs switch access time. A large capacity switching network using this WDM optical switch is proposed.

22 citations


Journal ArticleDOI

1 citations