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Link fault detection method and link fault detection device

A link fault detection method technology, applied in the field of communication, can solve the problem of untimely link fault feedback and achieve the effect of shortening the time of fault link feedback

Inactive Publication Date: 2017-08-01
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a link failure detection method and device to at least solve the problem in the related art that the root node is notified of the failure of the corresponding link through the routing and forwarding mechanism, resulting in untimely link failure feedback

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  • Link fault detection method and link fault detection device
  • Link fault detection method and link fault detection device
  • Link fault detection method and link fault detection device

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Embodiment Construction

[0024] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0025] In this embodiment, a link fault detection method is provided, figure 1 is a flow chart (1) of a link fault detection method according to an embodiment of the present invention, as figure 1 As shown, the process includes the following steps:

[0026] Step S102, the root node judges whether it has received a reverse bidirectional forwarding detection BFD message sent by multiple leaf nodes for detecting link failures, wherein the reverse BFD message carries an ID for identifying the reverse BFD message Label;

[0027] Step S104, when the judgment result is yes, the root node determines that the link that receives the reverse BFD message is normal according to the label;

[0028] Step S106, ...

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Abstract

The invention provides a link fault detection method and a link fault detection device. The method comprises steps: a root node judges whether to receive reverse bidirectional forwarding detection (BFD) packets transmitted by multiple leaf nodes for detecting link fault, wherein the reverse BFD packet carries a label for identifying the reverse BFD packet; in a condition in which the judgment result is positive, the root node determines the link receiving the reverse BFD packet is normal according to the label; and in a condition in which the judgment result is negative, the root node determines fault happens to the link not receiving the reverse BFD packet. Thus, the problem that feedback of the link fault is caused to be untimely when fault is informed to happen to the link corresponding to the root node through a routing forwarding mechanism in a related technology can be solved, and in a condition in which no extra overhead is generated for protocol signaling, the fault link feedback time is shortened.

Description

technical field [0001] The present invention relates to the communication field, in particular to a link fault detection method and device. Background technique [0002] Bidirectional Forwarding Detection (BFD for short) is a method for detecting the forwarding transmission capability of a link or a system. BFD can establish a peer-to-peer relationship with an adjacent system. When the peer-to-peer system does not receive a preset number of data packets, it can be inferred that the software or hardware infrastructure protected by BFD has failed. [0003] In point-to-multipoint traffic engineering (Point 2 Multiple Point Traffic Engineering, referred to as P2MP-TE) related technologies, the root node (root node) periodically broadcasts BFD keep-alive messages (referred to as BFD messages) to all leaf nodes (leaf nodes). ), when the leaf node does not receive the BFD discovery message from the root node within a period of time, it considers that the link corresponding to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L45/28
CPCH04L43/0811H04L9/40
Inventor 袁仁状
Owner ZTE CORP
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