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Network protection method, network node and system

A technology for protecting nodes and network nodes, applied in the field of communications, can solve the problems of false switching, low accuracy of protection switching, and inability to send signals from node C

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Problems solved by technology

[0005] However, in the actual network operation process, the inventor found that during the protection switching process of node B, due to known or unknown reasons such as clock switching and path switching, node B could not normally send data to node C within a certain period of time. In addition, due to the difference in the length of the active and standby optical fibers, etc., it is easy for the C node to misjudge that W2 is faulty, and then perform protection switching between W2 and P2
It can be seen that in the prior art, the protection switching between nodes may sometimes be mistaken switching, and the accuracy of protection switching is relatively low

Method used

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  • Network protection method, network node and system
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  • Network protection method, network node and system

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Embodiment Construction

[0050]In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] The methods, devices, and systems provided by the embodiments of the present invention are all based on the same principle and design. As long as the aspects introduced in the embodiments of the present invention are not conflicting or parallel, they can be combined with each other. The embodiments of the present invention do not limit....

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Abstract

An embodiment of the invention provides a network protection method, a network node and a communication system. The method comprises: when signal degradation or signal failure appears on a transmission service path, obtaining communication state of a source node in a protection section; and deciding whether to carry out protection switching according to the communication state of the source node and the communication state of a local communication path, so that error switching can be prevented to some extent, and accuracy in the communication network protection switching is improved.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a network protection method, a network node and a communication system. Background technique [0002] The robustness of the communication network is a network characteristic that communication operators are very concerned about. In order to enhance the robustness of the communication network, communication operators often establish a backup path or backup network for the communication path or communication network during the network construction process. Business offers protection. [0003] With the rapid development of communication technology, the communication network becomes more diverse and complex. At the same time, network protection technology is also facing many new challenges. [0004] Such as figure 1 as shown, figure 1 A communication network is given as an example. figure 1 Among them, node A, node B, and node C are connected in sequence, among which, nod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04J14/02H04B10/25H04L45/28
CPCH04L41/0668H04L41/0663H04L43/0817H04L43/0811H04L41/00H04W76/19H04W76/18H04L45/28H04W24/04
Inventor 阎君廖志权常天海卢洪涛陈旻熊骞
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