Network communication with path MTU size discovery
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United States of America Patent
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Aug 9, 2011
Grant Date -
Dec 4, 2008
app pub date -
May 30, 2007
filing date -
May 30, 2007
priority date (Note) -
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Abstract
A method for network communication and an apparatus for discovery of a maximum transmission unit (MTU) size in a path between two nodes of a network are disclosed. A plurality of test packets of varying transmission unit (TU) size may be sent from the first host to the second host. A “do not fragment” (DF) flag for the test packets is not set. It is determined whether one or more of the test packets were received by the second host. An estimated path MTU for a network path between the first and second hosts size may then be calculated based on one or more patterns of receipt of the test packets by the second host. Once the estimated Path MTU size has been determined, message packets of a size less than or equal to the Path MTU size may be sent over the network path.
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