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Packet transmission network protection switching device and method

A packet transmission network and protection switching technology, which is applied in the direction of data exchange network, transmission system, digital transmission system, etc., can solve problems such as heavy CPU load, and achieve the effects of ensuring reliability, improving scalability, and saving time

Active Publication Date: 2017-10-27
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The purpose of the present invention is to provide a PTN network protection switching device and method, to overcome the problem that the CPU burden is too heavy when the existing PTN network is performing protection switching

Method used

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  • Packet transmission network protection switching device and method
  • Packet transmission network protection switching device and method
  • Packet transmission network protection switching device and method

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Embodiment Construction

[0070] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. 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 arbitrarily with each other.

[0071] Such as figure 2 As shown, the entire protection switching device includes two parts: a hardware layer 21 and a software layer 22: different from the existing protection switching device, the hardware layer 21 includes not only an alarm detection module, an OAM packet sending and receiving module, and a switching processing module, but also It includes: an alarm propagation module and a protection group decision module, both of which are realized by hardware programmable devices. The software layer 22 is only responsible for OAM configuration and protection group ser...

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Abstract

A protection switching device and method for a packet transmission network, the device is divided into a hardware layer and a software layer, and the hardware layer includes: operation, management and maintenance (OAM) packet sending and receiving module, alarm detection module, switching processing module, alarm propagation module and protection Group decision-making module; the software layer includes: a protection group business support module and an OAM support module; the alarm propagation module is used for each business, according to the OAM alarm detected by the alarm detection module, to determine the working path and protection path associated with the business The failure status of the path is updated to the protection group where the service belongs in the protection group decision module; the protection group decision module is used to determine the switching decision according to the protection mode for each obtained path failure situation, and notify the switching decision to the switch The processing module; the OAM support module is used to send OAM configuration information to the OAM packet sending and receiving module, so as to instruct the OAM sending and receiving packet module to send and receive OAM messages according to the OAM configuration information.

Description

technical field [0001] The present invention relates to a packet transport network (Packet Transport Network, referred to as PTN), in particular to a PTN network protection switching device and method. Background technique [0002] PTN equipment usually needs to support network protection (that is, NNI (Network Node Interface, network node interface) protection), access link protection (that is, UNI (User Node Interface, user node interface) protection) and device-level protection. way of protection. Network protection is divided into: linear protection (such as: path linear protection, subnet connection protection, etc.), ring network protection (such as: single ring protection, ring intersection protection, ring tangency protection, etc.) and TE-FRR (Traffic Engineer FastReRoute, Traffic engineering fast rerouting) protection; access link protection is divided into: Ethernet link aggregation (LinkAggregation Group, referred to as LAG) protection and linear MSP (Multiplexi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/70H04L45/247H04L45/24H04L45/28
CPCH04L41/0813H04L43/10H04L41/0604H04L45/28H04L41/0663H04L41/0661H04L41/0654
Inventor 王华崔春来
Owner ZTE CORP
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