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Method and apparatus for fragmenting and reassembling internet key exchange data packets

  • US 7,500,102 B2
  • Filed: 01/25/2002
  • Issued: 03/03/2009
  • Est. Priority Date: 01/25/2002
  • Status: Expired due to Term
First Claim
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1. A method for transmitting Internet Key Exchange (IKE) data packets across a network comprising the steps of:

  • receiving a vendor identification value from a receiving node;

    in response to receiving the vendor identification value, using the vendor identification value to determine that the receiving node is IKE fragmentation capable;

    generating and transmitting an IKE packet to the receiving node over a network, the IKE packet having an original IKE header;

    determining whether a response to the IKE packet was received within a predetermined time interval;

    determining a maximum transmission unit size for the network;

    fragmenting the IKE packet into a plurality of smaller packets that do not exceed the maximum transmission unit size, wherein each of the smaller packets includes a header formatted according to the IKE protocol; and

    transmitting each of the plurality of smaller packets over a network.

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