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Recovery method for protection service in intelligent optical network

A technology of intelligent optical network and service, applied in the field of intelligent optical network, can solve the problem of long switching time affecting services and so on

Inactive Publication Date: 2012-10-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and device for restoring protection services in an intelligent optical network, which solves the problem that the long switching time under the GMPLS protocol affects services

Method used

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  • Recovery method for protection service in intelligent optical network
  • Recovery method for protection service in intelligent optical network
  • Recovery method for protection service in intelligent optical network

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Embodiment Construction

[0039] OTN is facing intelligent evolution, and its main technology, WSON, will realize intelligent scheduling and recovery of OTN services. However, different from IP services, services restored through the GMPLS protocol will cause 200ms-2s service damage, which is acceptable for IP services, but unacceptable for users of large-capacity bearer networks such as OTN.

[0040] In order to solve the above problems, embodiments of the present invention provide a method and device for restoring protection services in an intelligent optical network. 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.

[0041] First, Embodiment 1 of the present invention will be described with reference to the accompanying drawings.

[0042] The embodiment of...

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PUM

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Abstract

The invention provides a recovery method for protection service in an intelligent optical network and relates to the field of intelligent optical networks; and the invention also solves the problem that the switching time under the GMPLS (Generalized Multiprotocol Label Switching) protocol is longer and the service is affected. The recovery method comprises the steps of: monitoring a switching recovery protection group constituted by a working port and a protection port; selecting a new port and establishing a path with the new port when the port in the switching recovery protection group is in fault; and replacing the fault port with the new port and updating the new port to the switching recovery protection group. The technical scheme provided by the invention is applicable to a WSON (Wavelength Switched Optical Network) and realizes the rapid switching and recovery under the GMPLS protocol.

Description

technical field [0001] The invention relates to the field of intelligent optical networks, in particular to a method and device for restoring protection services in an intelligent optical network. Background technique [0002] The Optical Transport Network (OTN) is facing intelligent evolution, and its main technology, the Wavelength Division Control Plane (WSON), will realize intelligent scheduling and recovery of OTN services. However, different from IP services, services restored through the GMPLS protocol will cause 200ms-2s service damage, which is acceptable for IP services, but unacceptable for users of large-capacity bearer networks such as OTN. [0003] Therefore, the control plane needs to provide acceptable survivability of services through traditional protection technologies. In traditional protection, either relying on 1+1 protection or ring sharing protection, the service damage time can be less than 50ms, and may even reach the level of 10ms. This is because...

Claims

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Application Information

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IPC IPC(8): H04B10/08H04B10/00H04Q11/00
CPCH04B10/032H04Q11/0062H04Q2011/0081H04L41/04H04L41/0668H04L45/50H04L41/344
Inventor 富森卢鸿飞
Owner ZTE CORP
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