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System for acknowledging availability of neighbor node using data packet containing data that is ordinarily fowarded to neighbor node

  • US 5,805,818 A
  • Filed: 09/11/1996
  • Issued: 09/08/1998
  • Est. Priority Date: 09/11/1996
  • Status: Expired due to Term
First Claim
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1. Apparatus for quickly and efficiently requesting affirmation from a neighboring node coupled to a communication link of a network that the neighbor is available and connected to that link, the apparatus comprising:

  • a source node coupled to the communication link;

    a data packet forwarded by the source node over a network path encompassing the neighboring node, the data packet containing data of a type that is ordinarily forwarded to the neighboring node in connection with data communication and distinguishable from a control message; and

    control information stored in the data packet, the control information instructing the neighboring node to acknowledge receipt of the data packet to thereby affirm availability of the neighboring node without use of the control message.

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