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Loop status monitoring apparatus

  • US 20060026471A1
  • Filed: 11/24/2004
  • Published: 02/02/2006
  • Est. Priority Date: 07/30/2004
  • Status: Active Grant
First Claim
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1. A loop status monitoring apparatus that monitors a status of an arbitration loop that includes a plurality of devices and a switch that controls connections between the devices, the loop status monitoring apparatus having at least one of loop status detection data that is a result of detecting a status of the arbitration loop, primitive detection data that is a result of detecting whether a primitive has been received at each of a plurality of ports of the switch, and frame count data that is a result of detecting a frame count received by each of the ports, the loop status monitoring apparatus comprising:

  • a failure detecting unit that detects whether an initialization failure, which is a connection failure, has occurred during an initialization of the arbitration loop from the loop status detection data; and

    a device identifying unit that identifies, when the initialization failure is detected, a device with the initialization failure occurred from the primitive detection data or the frame count data.

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