Importance

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Abstract

A network switch divides incoming frame data into cells. Each of the cells include a source identification field. Depending upon bandwidth availability and upon cell priority, the cells are transmitted over a switch bus. The cells are then routed based upon the source identification field. The network switch determines bandwidth usage by monitoring the switch bus. Upon detection of a start-of-frame cell, the network switch increments a bandwidth counter. Upon detection of an end-of-frame cell, the network switch adds an entry to a decrement FIFO. After a switch bus latency period, the network switch removes the entry from the decrement FIFO and decrements the bandwidth counter.

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First Claim