Tunnel protection method and device

A tunnel and tunnel protection technology, applied in the field of communication, can solve the problems of inability to protect and restore, and achieve the effect of simple protection

Inactive Publication Date: 2011-04-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is proposed in view of the problem in the related art that it is impossible to protect and restore node failures and multiple link

Method used

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  • Tunnel protection method and device

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Experimental program
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Embodiment Construction

[0034] Functional Overview

[0035] Considering the problem in the related art that node failures and multiple link failures occur at the same time cannot be protected and restored, the embodiments of the present invention provide a tunnel protection method and device. The method includes: for each node on the ring network, respectively detects a link failure with an adjacent node and a failure of a peer node of the node; the node that detects the failure generates a failure path information notification message, and transmits the failure path information The notification message is sent to the faulty upstream node; the faulty upstream node binds the egress label of the faulty upstream node of the same service forwarding path in the faulty path information notification message with the ingress label of the faulty downstream node to form a relationship binding table; The upstream node sends the service message to the faulty downstream node according to the relationship binding ...

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Abstract

The invention discloses a tunnel protection method and a tunnel protection device. The tunnel protection method comprises the following steps of: respectively detecting a link fault between adjacent nodes and a fault of an opposite-end node of the node for each node on a looped network; generating a fault path information notification message for the node with the fault, and transmitting the fault path information notification message to a fault upstream node; binding an exit label of the fault upstream node with an entrance label of a fault downstream node in the same service forwarding path in the fault path information notification message through the fault upstream node so as to form a relationship binding list; and transmitting a service message to the fault downstream node through the fault upstream node according to the relationship binding list. The tunnel protection is easily realized, and service recovery and protection under the condition that the node fails or faults at a plurality of positions occur simultaneously can be realized.

Description

technical field [0001] The present invention relates to the communication field, in particular to a tunnel protection method and device. Background technique [0002] With the continuous increase of IP-based telecommunication services and data services, the traditional synchronous digital system (Synchronous Digital Hierarchy, referred to as SDH) SDH circuit switching equipment is not only in terms of the utilization of channel resources, but also the flexibility of services provided, There is a big problem in dealing with the suddenness of business, and it is necessary to transform from SDH circuit switching technology to IP / Multi-Protocol Label Switching (Multi-Protocol Label Switching, referred to as MPLS) and other packet transport networks. However, due to the use of packet switching technology, the existing IP / MPLS data network has made great progress in the suddenness and flexibility of business processing. and Maintenance (abbreviated as OAM) and survivability, etc....

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L12/46H04L12/26H04L45/28
Inventor 刘国满
Owner ZTE CORP
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