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Method and system for keeping a fibre channel arbitrated loop open during frame gaps

  • US 7,420,982 B2
  • Filed: 07/20/2004
  • Issued: 09/02/2008
  • Est. Priority Date: 07/21/2003
  • Status: Expired due to Fees
First Claim
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1. A method for keeping an arbitrated loop open during a frame gap using a fibre channel switch element, comprising:

  • activating a timer whose value determines a duration during which the arbitrated loop remains open;

    transferring a frame;

    determining if a last frame from a sequence of frames from a source port has been transmitted;

    determining if a higher priority frame is available for transmission;

    during the frame gap, modifying the timer value if no higher priority frame is available for transmission; and

    keeping the arbitrated loop open during the frame gap until the timer reaches a certain value, wherein if a frame is received from the source port after the timer value is modified then the frame is transmitted and the timer value is reinitialized.

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