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Interest keep alives at intermediate routers in a CCN

  • US 9,553,812 B2
  • Filed: 09/09/2014
  • Issued: 01/24/2017
  • Est. Priority Date: 09/09/2014
  • Status: Active Grant
First Claim
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1. A computer-implemented method for forwarding packets, the method comprising:

  • receiving, by an intermediate node, a keep-alive control packet which indicates a name for an Interest message, a field which indicates that an entry in a Pending Interest Table and corresponding to the name is to be kept alive, and a time period for which the entry is to be kept alive;

    determining whether the keep-alive control packet corresponds to the entry in the Pending Interest Table based on the name;

    responsive to determining that the keep-alive control packet corresponds to the entry, updating a timeout value of the entry based on the time period indicated in the keep-alive control packet; and

    responsive to determining one or more interfaces specified in the entry from which the Interest message is received, forwarding the keep-alive control packet to the one or more interfaces,thereby facilitating the intermediate node and other intermediate nodes associated with the one or more interfaces to handle a potential timeout event by refraining from re-transmitting the Interest message based on the keep-alive control packet.

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