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A method and system for transmitting data among a plurality of cards in a crossbar interconnect network having a plurality of cards each having source paths and destination paths utilizes a plurality of source arbitrators and a plurality of destination arbitrators each associated with the cards. The

A method and system for transmitting data among a plurality of cards in a crossbar interconnect network having a plurality of cards each having source paths and destination paths utilizes a plurality of source arbitrators and a plurality of destination arbitrators each associated with the cards. The source arbitrators generate connection request commands from the source paths requesting access to a desired destination path and broadcasts the request for receipt by all of the destination arbitrators. The destination arbitrator associated with the desired destination path captures the connection request command and processes the command based on whether or not the desired destination path is busy. If the desired destination path is not busy, the destination arbitrator generates a connection command requesting a connection be made between the source path and the desired destination path. If the desired destination path is busy, the destination arbitrator stores the connection request command in one of a plurality of buffers until the desired destination path becomes available.

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[ What is claimed is:] [24.]24. A scaleable apparatus for transmitting data among a plurality of cards in a crossbar interconnect network, each of the plurality of cards having source paths for originating the data and destination paths for receiving the data, the apparatus comprising:each of the ca

[ What is claimed is:] [24.]24. A scaleable apparatus for transmitting data among a plurality of cards in a crossbar interconnect network, each of the plurality of cards having source paths for originating the data and destination paths for receiving the data, the apparatus comprising:each of the cards including a source arbitrator in communication with each of the source paths and a destination arbitrator in communication with each of the destination paths, each of the destination arbitrators including a request buffer for each of the destination paths, the source arbitrators generating a connection request command for each of the source paths requesting access to a desired one of the destination paths, and the destination arbitrators capturing the connection request commands directed to any of the destination paths associated with its respective card, storing the connection request commands in the request buffer associated with the desired destination path if the desired destination path is busy, continuously monitoring the desired destination path to determine when the desired destination path is no longer busy, and generating connection commands when the desired destination path is not busy so that data may be transmitted;a communication bus coupling each of the source arbitrators with each of the destination arbitrators, the communication bus for receiving the connection request commands from each of the source arbitrators and broadcasting the connection request commands for receipt by each of the destination arbitrators and for receiving and broadcasting the connection commands from each of the destination arbitrators; anda switch connected to each of the source paths and each of the destination paths and the communication bus for connecting each of the source paths with a corresponding desired destination path upon receipt of a corresponding connection command.