×

System and methods for detecting network failure

  • US 7,583,593 B2
  • Filed: 12/01/2004
  • Issued: 09/01/2009
  • Est. Priority Date: 12/01/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of identifying network failure comprising:

  • periodically transmitting diagnostic messages to a plurality of predetermined routing points along a path to a destination;

    transmitting, if the diagnostic messages indicate a problem with intermediate nodes along the path, a series of path verification messages, each of the path verification messages including a command operable to direct an intermediate node to transmit a further message to a successive intermediate node in the path, receive the result from the further message, and report the result as a command response, the result indicative of reachability of the successive intermediate node;

    repeating the transmission of path verification messages to successive nodes along the path to the node indicating the problem;

    analyzing the received command responses from the successive path verification messages to identify problems; and

    determining an alternate route based on the analyzing to bypass the intermediate node identified as a source of the indicated problem.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×