07542471 is referenced by 88 patents and cites 144 patents.

Network endpoints using TCP/IP operate to determine the maximum transmission unit (MTU) of the path between them. This determination is done so as to avoid the expensive IP fragmentation that will occur when transitioning links with a smaller MTU size. The standard method of determining the path MTU (PMTU) has several known deficiencies, including: inefficient use of bandwidth as proper operation will likely result in the loss of one or more packets and difficulty of implementation as the reverse channel communication mechanism, reception of ICMP messages indicating the discarding of unfragmentable packets, is frequently blocked by firewalls and other security apparatus. A method of determining the PMTU between intermediate proxies is disclosed that does not require reception of ICMP messages or the inefficient use of bandwidth due to the presumed dropping of packets with valid data.

Title
Method of determining path maximum transmission unit
Application Number
10/696507
Publication Number
7542471 (B2)
Application Date
October 29, 2003
Publication Date
June 2, 2009
Inventor
Paul Sutter
San Fransisco
CA, US
Allen Samuels
San Jose
CA, US
Agent
Christopher J McKenna
John D Lanza
Choate Hall & Stewart
Assignee
Citrix Systems
FL, US
IPC
H04L 12/28
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