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IP/MPLS over WDM network protection and recovery method and system thereof

A technology of network protection and recovery methods, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of lack of coordination of survival strategies, lack of consideration of survival strategies, waste of resources, etc., so as to improve joint dynamic survivability, optimize The effect of resource utilization and survival efficiency

Active Publication Date: 2012-04-18
GUANGDONG PLANNING & DESIGNING INST OF TELECOMM
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Problems solved by technology

[0007] However, in the current IP / MPLS over WDM network survival scheme, the survival strategy of the data network is separated from the survival strategy of the optical network, and the advantages of the survival strategies of each layer are not taken into account. Doing so will not only result in a waste of resources, but also lead to alarm storms and confusion

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  • IP/MPLS over WDM network protection and recovery method and system thereof
  • IP/MPLS over WDM network protection and recovery method and system thereof
  • IP/MPLS over WDM network protection and recovery method and system thereof

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Embodiment Construction

[0025] see figure 2 , figure 2 It is a schematic flowchart of the IP / MPLS over WDM network protection and restoration method of the present invention.

[0026] The IP / MPLS over WDM network protection recovery method includes the following steps:

[0027] S101. Detect attributes of a faulty optical channel in a faulty link; if the faulty optical channel is a working optical channel, perform step S102; if the faulty optical channel is a protection optical channel, perform step S105.

[0028] When a fault occurs at the optical network layer, the protection optical channel of the optical layer is first used to implement service recovery. Therefore, in this step, first determine whether the attribute of the failed optical channel is a working optical channel or a protection optical channel. If it is a working optical channel, It can be judged whether it has a corresponding protection optical channel, and if so, the corresponding protection optical channel can be used to impleme...

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Abstract

The invention provides an IP (Internet protocol) / MPLS (multi-protocol label switching) over WDM (wavelength division multiplex) network protection and recovery method and a system thereof. The method comprises the following steps: detecting an attribute of a failed optical path in a failed link; if the failed optical path is a working optical path, further detecting whether the working optical path has a corresponding protection optical path or not; if the work optical path has a corresponding protection optical path, transferring LSPs (label switched path) services of the working optical path to the corresponding protection optical path, and releasing resource of the working optical path, otherwise, carrying out rerouting on all LSPs services of the working optical path on an IP / MPLS layer; if the failed optical path is the protection optical path, releasing resource of the protection optical path. According to the IP / MPLS over WDM network protection and recovery method, a data network and an optical network in an IP / MPLS over WDM network can be coordinated, and network survivability is raised.

Description

technical field [0001] The invention relates to the technical field of IP / MPLS over WDM dynamic optical network, in particular to an IP / MPLS over WDM network protection and recovery method, and an IP / MPLS over WDM network protection and recovery system. Background technique [0002] With the popularity of IP services, the rapid development of high-speed router technology, and the extensive adoption of Wavelength Division Multiplexing (WDM, Wavelength Division Multiplex) , the two-layer architecture in which IP / MPLS routers are directly carried on the WDM optical network is very mature and popular. [0003] Such as figure 1 As shown, the IP (Internet Protocol) / MPLS (Multi-Protocol Label Switching) network is responsible for providing end users (end users) with network services with QoS (Quality of Service, quality of service), ensuring rich data services and multimedia applications , support traffic engineering TE (TEtraffic engineering), SLA (Service-Level Agreement), VPN ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
Inventor 王云张优训李伟强
Owner GUANGDONG PLANNING & DESIGNING INST OF TELECOMM
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