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Method for detecting path maximum transmission unit and router for detecting same

A technology of maximum transmission unit and router, applied in the computer field, can solve the problem of lack of in-depth consideration of accurate positioning of empirical reference values, and achieve the effect of improving accuracy and saving iterative steps

Inactive Publication Date: 2014-12-10
ZTE CORP
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  • Application Information

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Problems solved by technology

Nick Christenson proposed a layered detection algorithm, which further improved the detection accuracy; later, there was also a layered detection algorithm improved by using the empirical reference table, but there was no in-depth consideration of how to improve the precise positioning of the empirical reference value

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  • Method for detecting path maximum transmission unit and router for detecting same
  • Method for detecting path maximum transmission unit and router for detecting same
  • Method for detecting path maximum transmission unit and router for detecting same

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Embodiment Construction

[0051] The implementation of the technical solution will be further described in detail below in conjunction with the accompanying drawings.

[0052] Aiming at the problem of improving the precise positioning of the empirical reference value, the present invention proposes a method for realizing the detection of the maximum transmission unit of the path, and applies the method to the detection algorithm. This method puts forward the concept of reference counting of empirical reference value, which can be used not only in hierarchical detection algorithm, but also in decrement method, increment method or other algorithms based on empirical reference value.

[0053]In various algorithms based on empirical reference values, the problem of selecting an empirical reference value will inevitably be faced. There is currently no standard regulation on which empirical reference value to choose. With the introduction of empirical reference value citation counting, the choice of empirica...

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Abstract

A method for detecting path maximum transmission unit (PMTU), the method comprises: determining a detection space according to the number of times cited of an empirical value in an empirical reference table; and determining the PMTU value according to the detection space. Also disclosed is a router thereof. The present invention improves the precision in locating empirical reference values, reduces the iteration steps for approaching the optimal PMTU, thus achieving the effect of fast convergence.

Description

technical field [0001] The invention relates to computer technology, in particular to a method and a router for realizing path maximum transmission unit detection. Background technique [0002] A disadvantage of the current Internet protocol suite is that a host lacks a standard mechanism for discovering the path maximum transmission unit (Path MTU, PMTU) of any path. Not all router devices in the current network support the PMTU detection (Path MTU Discovery, PMTUD) function, and it will be a very expensive project to replace these devices, so the PMTU detection algorithm has attracted more and more people's attention and research. [0003] In Request for Comments (RFC) 1191, the technical background and solution of this problem are analyzed in detail, and the detection algorithms mentioned include decremental method, incremental method, and empirical reference table method. Nick Christenson proposed a layered detection algorithm, which further improved the detection accur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701H04L12/26
CPCH04L47/10H04L41/0823
Inventor 邵长春
Owner ZTE CORP
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