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A fault diagnosis method and system for abnormal layer 2 network path

A layer 2 network and fault diagnosis technology, applied in transmission systems, electrical components, etc., can solve problems such as not the optimal path of the network, broadcast storm transmission network, tree protocol failure, etc.

Active Publication Date: 2022-06-24
NO 709 RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual networking, the failure of the spanning tree protocol may cause a broadcast storm or the actual transmission network formed by the spanning tree protocol through calculation is not the optimal path of the network.

Method used

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  • A fault diagnosis method and system for abnormal layer 2 network path
  • A fault diagnosis method and system for abnormal layer 2 network path
  • A fault diagnosis method and system for abnormal layer 2 network path

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Embodiment Construction

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0028] Based on the above content, an embodiment of the present invention provides a fault diagnosis method for an abnormal layer 2 network path, such as figure 1 shown, it includes the following steps:

[0029] S1. Obtain the topology structure of the Layer 2 network.

[0030] Specifically, as figure 2 As shown, the step S1 includes the following sub-steps:

[0031] S11. Obtain the physical connection relationship between Layer 2 network devices based on the LLDP function;

[0032] S12, forming a layer-2 network topology diagram according to the physical connection relationship betwe...

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Abstract

The invention discloses a fault diagnosis method and system for abnormal paths of a layer-2 network, which obtains the path cost of each port by obtaining the topology structure of the layer-2 network and the bandwidth of interconnected ports; and obtains the path of the layer-2 network according to the path cost The cost matrix is ​​based on the principle of minimum path cost and the root of the two-layer network is selected, and the path cost matrix of each ring in the network is calculated according to the selected tree root combined with the principle of spanning tree protocol, and the correct status of each port in the ring is determined. Therefore, it is judged whether the path planning of the layer 2 network is correct by reading the status of each port of each ring in the layer 2 network.

Description

technical field [0001] The invention relates to the field of network technology and network state monitoring, and in particular to a fault diagnosis method and system for an abnormality of a two-layer network path. Background technique [0002] Based on the consideration of reliability, there are usually redundant links in the local area network. To avoid broadcast storms, a method is needed to block redundant links, eliminate path loops, and when the active link is interrupted, the redundant links can be automatically switched to the forwarding state to restore network connectivity. However, in the actual LAN networking, it is necessary to ensure that there cannot be a connected ring network in the network. The specific network traffic along which path in the network for data transmission needs to be designed and planned in advance by the network engineer. [0003] The existence of a physical loop in the LAN indicates that there are at least two paths between each device i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L43/0811H04L43/10
CPCH04L43/0811H04L43/10
Inventor 霍可可杨胜钊石磊吴向军杨勇朱小东牛丽萍孙锋董华辉
Owner NO 709 RES INST OF CHINA SHIPBUILDING IND CORP