Multi-speed cut through operation in fibre channel switches
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United States of America Patent
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Aug 25, 2009
Issued Date -
N/A
app pub date -
Jul 20, 2004
filing date -
Jul 21, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A method and system for routing frames based on a port's speed using a fiber channel switch element is provided. The method includes, receiving a portion of a frame in a receive buffer of a port; determining a frame length threshold; and setting up a status bit based on the port's speed, the frame length threshold and an amount of frame received. The status bit is sent to a transmit segment of the fiber channel switch element and the frame length threshold value is inversely proportional to the port's speed. Also, if the receive buffer is almost full when a frame arrives at the receive port, then a cut status is based on a frames end of frame (“EOF”) value.
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