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Loop network protection controlling method

A protection control and ring network technology, applied in the field of digital information transmission, can solve problems such as incompatibility with optical layer transmission, and achieve the effects of strong business compatibility and practicability, improving practicability, and improving work efficiency and reliability.

Active Publication Date: 2008-02-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide a ring network protection control method with simple operation and high reliability to overcome the defect that the existing technology is not suitable for optical layer transmission

Method used

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  • Loop network protection controlling method
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  • Loop network protection controlling method

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Embodiment Construction

[0058] Below according to accompanying drawing and embodiment the present invention will be described in further detail:

[0059] The ring network shown in Figure 4 is composed of 5 nodes A, B, C, D, and E, and has 3 service connections. Each service connection is represented by a thick solid line. Among them, there is a Service connection; there is a service connection between node C and node D, and there is a service connection between node A and node D; the dotted line indicates the protection channel of the ring network, which is shared by the three services on the ring. As shown in Figure 4, each network service is distributed in different locations of the network, and they share the same working channel, that is, the three services use the same resource when they are transmitted on the ring network: for example, for the optical transport network OTN, the The same optical channel data unit ODU of the OTN frame, or the same wavelength channel in the wavelength division mul...

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Abstract

This invention is a kind of looped network protection controlling method relating to digital information transmission. It concludes the following steps: 1) in the looped network composed of many nodes, the identification is assigned to each node. Corresponding protection channel is arranged to working channel. 2) Looped network topological graph and local service topological table are saved in each node; the network topological graphs mirror the topological structure of looped network through identification. The local service topological table mirrors the service about the said node and corresponding working path. 3) When each node has detected network fault, the network fault information is transferred among each node in the looped network through communication channel. 4) According to network fault information, looped network topological graph and local service topological table, each node in the looped network judges the influence of the node service exerted by the said network fault. Each node also adopts corresponding protection channel service inversion or break over.

Description

technical field [0001] The invention relates to digital information transmission, in particular to a ring network protection control method. Background technique [0002] The advancement of optical devices has greatly promoted the development of optical communication technology, especially the development of wavelength division multiplexing WDM technology. The communication capacity that a single optical fiber can carry has reached Tbps. In this case, the failure of the optical fiber line of the underlying optical network Or equipment failure often affects a large number of businesses. [0003] Network survivability refers to the ability of the network to maintain an acceptable level of service quality during the period of network failure and equipment failure. The main technical indicators that characterize the network survival performance are: redundancy, recovery rate and recovery time. Redundancy is defined as the ratio of the total idle capacity to the total working c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/437H04J3/08
Inventor 赵俊李从奇
Owner HUAWEI TECH CO LTD
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