Graceful port shutdown protocol for fibre channel interfaces
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United States of America Patent
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Sep 22, 2009
Grant Date -
Apr 27, 2006
app pub date -
Oct 25, 2004
filing date -
Oct 25, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A port shutdown protocol coordinates among various components involved in the process of administratively bringing down a link at both ends of a link connecting two switches. Execution of the protocol avoids or reduces frame drops and/or reordering. In this protocol, peer switches perform various actions when bringing down an ISL in a synchronized manner. In one implementation, this protocol uses the Exchange Peer Protocol (EPP) as the underlying transport to carry the port shutdown protocol frames.
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