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Path establishing method and apparatus

A technology for establishing a method and a path, which is applied in the field of communication and can solve the problems of heavy signaling processing pressure of intermediate nodes, path error checking and processing, etc.

Active Publication Date: 2017-11-24
MAIPU COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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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 invention discloses a path establishing method and apparatus, and relates to the technical field of communication. The path establishing method and apparatus are used for solving the problem that in the prior art, intermediate nodes in a P2MP (Point-to-Multipoint) TE (Traffic Engineering) tunnel need to take charge of inspecting and processing path errors, thus causing the signaling processing pressure of the intermediate nodes to be excessively huge. The path establishing method includes the steps: generating the path information of a Sub-LSP (Sub Label Switched Path) by a root node; when detecting that the path information of the target Sub-LSP has a path error, regenerating the path information of the target Sub-LSP until no path errors exist in the path information of the target Sub-LSP; and using the regenerated path information of the target Sub-LSP to establish the target Sub-LSP. The path establishing method and apparatus are suitable for 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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IPC IPC(8): H04L12/46H04L12/721H04L12/723H04L45/50
CPCH04L12/4633H04L45/14H04L45/34H04L45/50
Inventor 秦川
Owner MAIPU COMM TECH CO LTD