Interconnect fabric providing connectivity between an input and

Details Interconnect fabric providing connectivity between an input and Interconnect fabric providing connectivity between an input and

1989-08-29

1990-09-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

049550160

ABSTRACT:
This invention is an inventive N input by L output interconnect fabric. In operation, packets comprising an information field and an address are received at the N inputs to the interconnect fabric, and the address in each packet is mapped to a group of outputs, rather than to any particular output. Each packet is then routed to any available one of the interconnect fabric outputs associated with the group to which the packet is mapped. If a number of packets destined for the same group simultaneously arrive at the interconnect fabric inputs and the group to which they are all destined does not comprise enough outputs to accept them, then all packets in excess of the number that the destined group can accept are simply discarded. The probability of lost jackets due to such discarded packets is acceptably small. In one exemplary embodiment, the invention can be utilized to build arbitrarily large packet switches.

REFERENCES:
patent: 4577308 (1986-03-01), Larson et al.
patent: 4623996 (1986-11-01), McMillen
patent: 4630257 (1986-12-01), Larson et al.
patent: 4630260 (1986-12-01), Toy et al.
patent: 4730305 (1988-03-01), Acampora et al.
patent: 4754451 (1988-06-01), Eng et al.
patent: 4760570 (1988-07-01), Acampora et al.
patent: 4837761 (1989-06-01), Isono et al.
IEEE Transactions on Communications, vol. 36, No. 6, Jun. 1988, "Design of a Broadcase Packet Switching Network", J. S. Turner, pp. 734-743.

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