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Method and device for establishing a path

A technology for establishing methods and paths, which is applied in the field of communication, and can solve problems such as path error checking and processing, and the pressure of intermediate node signaling processing.

Active Publication Date: 2020-06-02
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a path establishment solution, which is used to solve the problem that the intermediate node of the P2MP TE tunnel needs to be responsible for the inspection and processing of path errors in the prior art, resulting in excessive pressure on the signaling processing of the intermediate node

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  • Method and device for establishing a path

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them.

[0030] It is worth noting that, in the P2MP TE tunnel, the root node is the source end of data forwarding, and the leaf node is the destination end of data forwarding. In addition, in order to ensure no error in data forwarding, for a leaf node, there is only one Sub-LSP from the root node to the leaf node in the network.

[0031] In addition, in order to facilitate the understanding below, the embodiment of the present application introduces path intersection and path rejoining by way of examples.

[0032] Such as figure 1 As shown, Sub-LSP1 and Sub-LSP2 have the same root node A, the leaf node of Sub-LSP1 is F, and the leaf node of Sub-LSP2 is G. The path of Sub-LSP1 is A→B→H→J→...

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Abstract

The present application discloses a method and device for establishing a path, which relates to the field of communication technology and is used to solve the problem in the prior art that the intermediate node of a P2MP TE tunnel needs to be responsible for checking and processing path errors, resulting in excessive signaling processing pressure on the intermediate node . The method includes: the root node generates the path information of the Sub-LSP; in the case where a path error is detected in the path information of the target Sub-LSP, regenerating the path information of the target Sub-LSP until the path information of the target Sub-LSP There are no path errors; finally, the destination Sub-LSP is established using the path information of the regenerated destination Sub-LSP. This application applies to the process of establishing a Sub-LSP.

Description

technical field [0001] The present application relates to the field of communication technology, in particular to a path establishment method and device Background technique [0002] Point-to-Multipoint (P2MP) Traffic Engineering (Traffic Engineering, TE) tunnel is one of the public network tunnel forms of Next-Generation Multicast Virtual Private Network (NG-MVPN) , the P2MP TE tunnel can provide functions such as bandwidth reservation, Quality of Service (Quality of Service, QoS) guarantee, explicit path, and fast repath. A P2MP TE tunnel generally includes multiple sub-label switched paths (Sub Label Switched Path, Sub-LSP). However, due to path calculation errors, manual configuration errors, or network topology errors, path crossing or path re-convergence may occur between two Sub-LSPs of the same P2MP TE tunnel. Path crossings and path remerging are path errors. [0003] In the prior art, the path error checking and processing method is as follows: the intermediate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/46H04L12/721H04L12/723H04L45/50
CPCH04L12/4633H04L45/14H04L45/34H04L45/50
Inventor 秦川
Owner MAIPU COMM TECH CO LTD