Method and system for detecting congestion and over subscription in a fibre channel network
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United States of America Patent
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Apr 21, 2009
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app pub date -
Jul 20, 2004
filing date -
Jul 21, 2003
priority date (Note) -
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Abstract
A method and system for detecting congestion and over-subscription in a fiber channel switch element is provided. A counter is updated if a frame cannot be transmitted due to lack of credit; then the counter value is compared to a threshold value; and an event is triggered if the counter value varies from the threshold value. Also, provided is a first register that maintains information regarding a rate at which a source port can transfer data; a counter that counts entries corresponding to a number of frames to be transmitted at a given time; and a second register that determines an over-subscription rate.
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