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Network fault detection method, primary device, slave device, control terminal and system

A network failure and control terminal technology, applied in the field of network communication, can solve problems such as long service interruption time, difficulty in detecting network failure, difficult operation, etc., and achieve the effect of improving accuracy and speed

Inactive Publication Date: 2009-04-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In prior art 1, due to the large amount of business traffic on the Internet, it is difficult to judge faults based on the ping packet statistics of each network device, and it takes a long time
In addition, in a virtual private network (VPN, Virtual Private Network), it is also difficult to construct a ping packet consistent with the business flow to detect network failures
This process will take a long time, causing business interruption for too long
[0008] In prior art 2, the constructed detection flow may not be completely consistent with the actual interrupted service flow. The detection flow is transmitted between the forwarding layer and the protocol layer, and the accuracy of its transmission will be affected, which will cause inaccurate statistical results.
In addition, in some complex scenarios, such as Multi-Protocol Label Switching (MPLS, Multi-Protocol Label Switching) networks, VPNs, etc., the method of constructing detection streams cannot obtain the required feedback information

Method used

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  • Network fault detection method, primary device, slave device, control terminal and system
  • Network fault detection method, primary device, slave device, control terminal and system
  • Network fault detection method, primary device, slave device, control terminal and system

Examples

Experimental program
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Embodiment 1

[0044] In order to quickly and accurately detect faulty network devices or links when network services are interrupted, an embodiment of the present invention proposes a network fault detection method, see figure 1 , the method includes:

[0045] 101: Obtain a preset number of service interruption packets, and modify the service interruption packets according to a preset policy to generate detection packets.

[0046] When a certain service is interrupted in the network, the message of the interrupted service is regarded as the interrupted service message. Obtaining a preset number of interruption service packets specifically includes: receiving packets passing through its own ingress port, identifying the interruption of service packets by matching the packets passing through its own ingress port, and then according to specific instructions or pre-configured selection strategies from A preset number of service interruption messages are selected from the obtained service inter...

Embodiment 2

[0058] In the embodiment of the present invention, it is described in conjunction with a specific application scenario, the application scenario is as follows figure 2 Shown: A certain service is interrupted in the network U1 to U2, the transmission direction is from U1 to U2, and the network devices passing through are A, B, C, and D in sequence.

[0059] To collect information about a failed network device or link, the following preparatory steps are required:

[0060] (1) Through negotiation, the network device A adjacent to the message transmission start end is used as the master device, and other network devices B, C, and D are used as slave devices. The master device is used to collect feedback information reported by the slave device, and the slave device is used to report feedback information to the master device.

[0061] (2) The master device A initiates connections to the slave devices B, C, and D respectively to transmit request information and feedback informati...

Embodiment 3

[0091] An embodiment of the present invention provides a master device 401 for network fault detection, see Figure 4 , the master device 401 includes:

[0092] The generation module 401a is used to obtain a preset number of interrupted service messages, and modify the interrupted service messages according to a preset strategy to generate detection messages;

[0093] The forwarding statistics module 401b forwards the detection message to the slave device located in the direction of interrupting the service message transmission, and generates statistical information, the statistical information includes the number of detection messages generated and the number of detection messages passing through its own output port;

[0094] The receiving module 401c is configured to receive feedback information from each slave device, the feedback information including the number of detection packets passing through the input port of the slave device and the number of detection packets pass...

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Abstract

The embodiment of the invention discloses a method, a main device, a slave device, a control terminal and a system for detecting network faults, belonging to the network communication field. The method comprises: obtaining interrupt business messages of presupposed quantity and modifying the interrupt business messages to generate detecting messages; forwarding the detecting messages to the device and generating statistic information; receiving feedback information from the device and judging network faults according to the statistic information and the feedback information. The main device comprises a generating module, a forwarding statistical module, a receiving module and a judging module. The slave device comprises a receiving module, a detecting module, a statistic module and a sending module. The control terminal comprises a receiving module and a judging module. The system comprises the main device and the slave device. The technical scheme of the embodiment improves the accuracy and the speed for the detection of the network faults.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a network fault detection method, a master device, a slave device, a control terminal and a system. Background technique [0002] In a large-scale network composed of dozens or even hundreds of routers, which carry multiple services such as voice, signaling, and data, when a certain service is interrupted on the network, the reason may be that the network equipment in the network is faulty or Link failure. The key to dealing with network service interruption is to accurately determine the cause of the failure. After determining the cause of the failure, various operations can be used to restore services, such as single-board reset, complete machine restart, and replacement of spare parts. The operation of service restoration will not take a lot of time . [0003] In the prior art, when services in the network are interrupted, there are two methods for detecting network faul...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L12/56H04L29/06
Inventor 孙建平
Owner HUAWEI TECH CO LTD
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