H - Electricity – 04 – L
Patent
H - Electricity
04
L
344/25
H04L 12/56 (2006.01)
Patent
CA 1278848
Abstract: The present invention relates to an N-input, N- output "Knockout" packet switch which uses decentralized control and distributed routing. More particularly, within the switch, the N input signals comprising fixed- length packets propagate along separate broadcast buses to each of N bus interface units which include N packet filters, a concentrator and a shared buffer. Each bus interface unit is associated with a separate one of the N outputs of the switch, and the N packet filters therein are each associated with a separate one of the N broadcast buses for detecting if a packet on the associated bus is destined for the associated switch output. The concentrator is used to reduce the number of separate buffers needed to receive packets which may arrive simultaneously and are destined for the associated output. Contending packets at the output of the concentrator are stored in the shared buffer before placement on the output line on a first-in, first-out basis. The lost packet rate of the "Knockout" switch can be made as small as desired and latency of packets in the switch is the smallest achievable by any comparable switch.
543800
Acampora Anthony
Hluchyj Michael Gene
Yeh Yu Shuan
American Telephone And Telepraph Company
Kirby Eades Gale Baker
LandOfFree
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