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Identifying link failures in a network

  • US 6,804,712 B1
  • Filed: 06/30/2000
  • Issued: 10/12/2004
  • Est. Priority Date: 06/30/2000
  • Status: Active Grant
First Claim
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1. A method for identifying failures of links in a network, the method comprising the computer-implemented steps of:

  • receiving information that represents a physical topology of the network;

    determining a path between a particular network device and a management station that is associated with the network, wherein the path consists of one or more links that connect devices within the network;

    determining, based on whether the particular network device is between one or more devices of the network and the management station, a set of beyond link devices, wherein the set of beyond link devices includes only devices that can communicate with the management station through the particular network device and that cannot communicate with the management station without the particular network device;

    sending a first message to one or more active devices within the network, wherein each first message requests a response to be returned from the device for which the message was sent;

    determining a set of non-responding devices within the network based on responses to the first messages; and

    comparing the set of non-responding devices to the set of beyond link devices to identify link failures within the network.

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