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Method and device for detecting transmission link quality

A transmission link and quality technology, applied in the communication field, can solve problems such as business impact, continuous discarding of BFD detection packets, discrete discarding of packets, etc.

Active Publication Date: 2018-05-04
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Currently, BFD is only suitable for detecting link connectivity, that is, the link information obtained through BFD is either connected or disconnected.
In some cases, when the link transmission quality is low and signal degradation occurs, a small number of packets are usually discarded discretely.
When the signal on the transmission link is degraded, a small number of BFD detection packets will be discarded. Generally, the continuous discarding of BFD detection packets will not result in the BFD alarm and thus the protection switching of services. of businesses may have been affected

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  • Method and device for detecting transmission link quality
  • Method and device for detecting transmission link quality
  • Method and device for detecting transmission link quality

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Embodiment Construction

[0027] 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.

[0028] figure 1 is a flowchart of a method for detecting the quality of a transmission link according to an embodiment of the present invention, such as figure 1 As shown, the method mainly includes the following steps (step S102-step S104).

[0029] Step S102, acquiring the packet loss rate of bidirectional forwarding detection (BFD) detection packets within the detection period.

[0030] Step S104, judging whether the packet loss rate is greater than a preset alarm triggering threshold, and if the judging result is yes, triggering a signal degradation alarm.

[0031] In step S102 of this embodiment, when obtaining the packet loss rate of the bidirectional forwarding detection (BFD) detection mes...

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Abstract

The invention discloses a method and a device for detecting the quality of a transmission link. Wherein, the method includes: obtaining the packet loss rate of the bidirectional forwarding detection (BFD) detection message within the detection period; judging whether the packet loss rate is greater than a preset alarm trigger threshold, and triggering a signal if the judging result is yes Deterioration warning. Through the present invention, the effect of conveniently and simply realizing the detection of signal degradation in the transmission link is further achieved.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for detecting the quality of a transmission link. Background technique [0002] An increasingly important feature of network equipment is to quickly detect the communication quality of network links. When the link quality does not meet user requirements, the backup network path can be quickly switched to the active network path. [0003] Bidirectional Forwarding Detection (BFD for short) can provide a common low-overhead and fast fault detection service for various upper-layer control protocols. route. The reason why BFD is called bidirectional forwarding detection is that the BFD protocol can provide connectivity detection in two directions of the link through the three-way handshake mechanism. BFD can quickly detect interface and link failures on the forwarding path, and node forwarding engine failures, and then notify the upper-layer control protocol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/24
Inventor 李青霖刘银恩邱军辉李能禾原松
Owner ZTE CORP
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