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Business protection method, device and system in multilayer networks

A multi-layer network and service protection technology, which is applied in the communication field, can solve the problems of service protection performance degradation, long implementation time, and prolongation of service recovery time, etc.

Active Publication Date: 2017-02-15
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0012] The existing delay time operation mechanism has two major disadvantages: first, when the bearer layer network protection switching fails, the upper layer protection must wait until the end of the delay time, which prolongs the service recovery time and degrades the service protection performance; The protection protocol is complex and takes a long time to implement

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  • Business protection method, device and system in multilayer networks
  • Business protection method, device and system in multilayer networks
  • Business protection method, device and system in multilayer networks

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Embodiment Construction

[0064] In order to realize coordinated protection between multi-layer networks and avoid protection shocks, the applicant has carefully studied the prior art.

[0065] In recent years, with the development of control plane technology, such as Automatically Switched Optical Network (ASON), Software Defined Network (Software Defined Network, SDN) and other technologies, the bearer layer network has traditional network protection functions , also has a more flexible rerouting function, that is, using existing resources to recalculate an available path, and using the newly calculated available route to ensure business operation.

[0066] For a multi-layer network, the network resources occupied by the upper-layer network are generally only a part of the lower-layer network. If the lower-layer network has more flexible service recovery capabilities, it will have more selectivity in optional resources than the upper-layer network, that is, business The possibility of not being affec...

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Abstract

The present invention discloses a business protection method, device and system in multilayer networks used for realizing the cooperative protection between the multilayer networks and avoiding the protection shock. The method comprises the steps of when a lower-layer network detects a business fault, starting the recovery routing calculation; when the recovery routing calculation is finished, determining the first time of the recovery routing calculation from starting to finishing; calculating the difference value of the delay time when an upper-layer network detects the business fault and the first time, determining the difference value as the second time; only when the second time satisfies a condition that the lower-layer network finishes the recovery routing switching, starting the recovery routing switching to recover a normal business.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method, device and system for service protection in a multi-layer network. Background technique [0002] With the rapid development of telecommunication technology, in order to meet different business needs, the network architecture of operators presents the characteristics of multi-technology coexistence, and each layer and domain perform their own functions. The survivability of the network, especially the survivability of the multi-layer network is a key technology that urgently needs to be broken through. [0003] In a multi-layer network, each layer has technology to ensure service reliability. When a service fails, each layer of the network involved in the service will sense the fault, and each layer of the network will take corresponding service protection or recovery actions. In order to avoid the switching oscillation caused by the independent operation of dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/703H04L12/715H04L45/28
CPCH04L41/342
Inventor 李晗程伟强王敏学张婷婷
Owner CHINA MOBILE COMM GRP CO LTD
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