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Method, node and system for establishing backup label switching path

A label switching path and backup path technology, which is applied in the field of establishing a backup label switching path, can solve the problems of occupying large network resources and consuming bandwidth, and achieve the effects of saving network resources and label resources, preventing repeated sending, and avoiding waste of resources

Inactive Publication Date: 2009-10-07
深圳市智通天下科技服务有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Point-to-multipoint LSP (P2MP LSP) itself needs to occupy a lot of network resources, and its protection will consume more bandwidth

Method used

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  • Method, node and system for establishing backup label switching path
  • Method, node and system for establishing backup label switching path
  • Method, node and system for establishing backup label switching path

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Embodiment Construction

[0031] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0032] Such as figure 1 As shown, a method for establishing a backup label switching path provided by an embodiment of the present invention includes:

[0033] Receive signaling for establishing a backup label switching path;

[0034] Determine whether the current node is a fault-independent branch node, and if so, bind the upstream and downstream working path and the backup path.

[0035] Another embodiment of the present invention provides a method for establishing a backup label switching path, further comprising: the signaling carries leaf node information protected by the backup path, and the node uses the leaf node information protected by the carried backup path and the local The leaf node information saved by the node determines whether the node is a fault-indepen...

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Abstract

The embodiment of the invention discloses a method for establishing a backup label switching path, and a method, a node and a system for protection and rearrangement of a fault. The method for establishing a backup label switching path comprises the following steps: receiving a command for establishing a backup label switching path; judging whether the node is a branch node unrelated to the fault or not, if the node is a branch node unrelated to the fault, binding an operating path and a backup path on the upper stream and the lower stream. By using the operating path unrelated to the fault, the superposition of the backup path and the operating path is avoided, the resource waste caused by a loop formed by the backup path and the operating path is avoided, and network resources and label resources are saved. A service message is sent to the superposed part of the backup path and the operating path to prevent the repeated sending of the service message, bandwidth resources are saved, and thus, effective multicast LSP protection is achieved by using least resources.

Description

Technical field [0001] The invention relates to label switching technology, in particular to a method for establishing a backup label switching path and a fault protection switching method, node and system. Background technique [0002] Multi-Protocol Label Switch MPLS (MultiProtocol Label Switch) was originally proposed to improve the forwarding speed of routers. It is an IP switching technology that combines Layer 3 IP and Layer 2 switching. Its core idea is to packetize Classify, label packets according to different categories, establish a label switch path LSP (Label Switch Path), and then transmit the packets on the pre-established label switch path only based on the label in the MPLS network. Through further transformation, MPLS technology has gradually evolved into General MPLS (GMPLS) technology. Transport MPLS (T-MPLS) technology appears now. These packet switching networks can be collectively referred to as label switching networks. [0003] Multicast is a routing techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L29/06
CPCH04L69/40H04L29/14
Inventor 贺佳杨洋龙昊尧昱黄善国张永军
Owner 深圳市智通天下科技服务有限公司
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