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Fault isolation for communication networks for isolating the source of faults comprising attacks, failures, and other network propagating errors

  • US 6,442,694 B1
  • Filed: 02/27/1998
  • Issued: 08/27/2002
  • Est. Priority Date: 02/27/1998
  • Status: Expired due to Fees
First Claim
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1. A method for performing attack localization in a network having a plurality of nodes, the method comprising the steps of:

  • determining, at each of the plurality of nodes in the network, if there is an attack on the node;

    transmitting one or more messages between first and second nodes wherein said first node is upstream from said second node and wherein each of the one or more messages indicates that the node transmitting the message detected an attack at the message transmitting node; and

    processing messages received in a message processing one of the first and second nodes to determine if the attack was passed to the message processing node from another node or if the message processing node is a first node to sustain an attack on a certain channel.

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