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Method of determining path maximum transmission unit

  • US 7,969,876 B2
  • Filed: 04/24/2009
  • Issued: 06/28/2011
  • Est. Priority Date: 10/30/2002
  • Status: Active Grant
First Claim
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1. A method for performing by a proxy discovery of a maximum transmission unit of a path between a client and a server, the method comprising:

  • (a) increasing, by a first proxy, a size of a path maximum transmission unit (PMTU) by a predetermined amount for transmitting network packets between a client and a server via the first proxy;

    (b) repacketizing, by the first proxy, network packets received from the client for transmission to the server into packet sizes in accordance with the size of the PMTU;

    (c) determining, by the first proxy, a first network packet of the repacketized network packets with a round trip time greater than a previous round trip time for networks packets transmitted to the server; and

    (d) increasing, by the first proxy, the size of the PMTU by the predetermined amount responsive to receiving an acknowledgement for the first network packet without a fragmentation indication.

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