Network communication with path MTU size discovery

Details Network communication with path MTU size discovery Network communication with path MTU size discovery

2011-08-09

2011-08-09

Sheikh, Ayaz (Department: 2476)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S351000, C370S389000, C370S400000, C709S232000, C709S238000

Reexamination Certificate

active

07995478

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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