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A method, device and system for service protection in a multi-layer network

A multi-layer network and service protection technology, applied in the field of communications, can solve the problems of service protection performance degradation, prolonging service recovery time, and long implementation time.

Active Publication Date: 2019-07-12
CHINA MOBILE COMM GRP CO LTD
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  • Abstract
  • Description
  • Claims
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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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  • A method, device and system for service protection in a multi-layer network
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  • A method, device and system for service protection in a multi-layer network

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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 invention discloses a method, device and system for service protection in a multi-layer network, which are used to realize cooperative protection between multi-layer networks and avoid protection shock. The method includes: when the lower layer network detects that a service failure occurs, start the recovery route calculation; when the recovery route calculation is completed, determine the first time from the start to the completion of the recovery route calculation; The difference between the delay time set when a failure occurs and the first time is determined as the second time; only when the second time satisfies the condition that the lower-level network completes the recovery route switching, start Restoring route switching to restore the service to normal.

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 Patents(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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