Path maximum transmission unit determination

Details Path maximum transmission unit determination Path maximum transmission unit determination

2011-04-05

2011-04-05

Rao, Seema S (Department: 2462)

Multiplex communications

Diagnostic testing

Path check

C370S252000, C370S400000, C709S233000

Reexamination Certificate

active

07920481

ABSTRACT:
Disclosed are techniques for determining a path maximum transmission unit (MTU) of a communication path connecting two or more nodes of a network. A node initiates a connection with a remote node by repeatedly transmitting increasingly-larger path MTU discovery messages until the size of a path MTU discovery message exceeds the link MTU of a link within the communication path. This results in the generation and transmission of an MTU error message back to the initiating node. The edge router linked to the initiating node generates a MTU change message in response to receiving the MTU error message and multicasts the MTU change message to all local nodes to which it is linked. The MTU change message directs the receiving nodes to update their destination caches to reflect the path MTU discovered through the use of the increasing-size path MTU discovery messages and the resulting MTU error message.

REFERENCES:
patent: 2003/0185208 (2003-10-01), Lee et al.
patent: 2003/0188015 (2003-10-01), Lee et al.
patent: 2004/0008664 (2004-01-01), Takahashi et al.
patent: 2005/0041635 (2005-02-01), Chung et al.
patent: 2005/0246570 (2005-11-01), Block et al.
patent: 2005/0281288 (2005-12-01), Banerjee et al.
patent: 2008/0101237 (2008-05-01), Ogura et al.
patent: 2008/0159150 (2008-07-01), Ansari
U.S. Appl. No. 11/970,516, filed Jan. 7, 2008.
U.S. Appl. No. 12/033,397, filed Feb. 19, 2008.
J. Mogul et al., “Request for Comments (RFC) 1191—Path MTU Discovery” Network Working Group, Nov. 1990, pp. 1-19.
J. McCann et al., “Request for Comments (RFC) 1981—Path MTU Discovery for IP Version 6” Network Working Group, Aug. 1996, pp. 1-15.
T. Narten et al., “Request for Comments (RFC) 2461—Neighbor Discovery for IP Version 6 (IPv6)” Network Working Group, Dec. 1998, pp. 1-95.
M. Mathis et al., “Request for Comments (RFC) 4821—Packetization Layer Path MTU Discovery” Network Working Group, Mar. 2007, pp. 1-34.

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