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Optical transport network protection recovery method and device based on SDN and storage medium

A protection recovery and optical transport network technology, applied in the field of optical fiber communication, can solve problems such as poor interoperability, difficult compatibility, inability to achieve resource optimization and fault resolution optimization, etc.

Inactive Publication Date: 2019-07-09
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First: It leads to poor interoperability of different implementation methods. When there are devices from multiple manufacturers in a domain, it is difficult to achieve compatibility;
[0005] Second: There may be a waste of resources in redundant operations. Due to poor interoperability, the fault handling methods of different manufacturers are isolated from each other, resulting in many unnecessary operations and waste of resources.
[0006] Third: It is impossible to find the most suitable solution to the current fault from the perspective of the entire network, resulting in the inability to achieve resource optimization and fault resolution optimization

Method used

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  • Optical transport network protection recovery method and device based on SDN and storage medium
  • Optical transport network protection recovery method and device based on SDN and storage medium
  • Optical transport network protection recovery method and device based on SDN and storage medium

Examples

Experimental program
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Effect test

example 1

[0121] Currently, the recovery constraint (resilienceConstraint) object in the ONF model includes the recovery (ResilienceType) type object. Specify the protection / recovery type and strategy of a specific service through resilienceType. The current ResilienceType is defined as follows:

[0122]

[0123]

[0124] According to the above definition, since a service needs to configure the protection type, recovery type, and the range of protection and recovery (end-to-end or domain-by-domain), the current field definition is not enough to meet the needs of multi-domain protection and recovery strategies. This proposal expands the resilienceType, adding protection range (protectionRange) field and restore range (restoreRange) field, which respectively indicate the range of execution protection and execution range, that is, the range where the protection path is located and the range where the recovery path is located. , is it an end-to-end cross-domain scope or a single doma...

example 2

[0172] Such as Figure 5 As shown, this example provides a 1+1 protection method based on the example, including:

[0173] The SC performs route calculation of the protection path;

[0174] The SC sends the configuration information of the reserved network resources of the protection path to the controllers DC A and DC B of domain A and domain B that the protection path passes through respectively;

[0175] DC A detects a fault and switches the service to the protection path, that is, switches the transmission of service data from the working path to the protection path;

[0176] DC A sends a fault report to SC;

[0177] The SC recalculates the routing of the current working path;

[0178] The SC reserves the network resources of the protection path again, and sends information about the reserved network resources of the protection path to DC A and DC B respectively.

example 3

[0180] Such as Figure 7 As shown, this example provides a recovery method for dynamic rerouting, including:

[0181] SC performs resource configuration, and sends configuration information of resource configuration to DC A;

[0182] DC A detects the failure, and then calculates the route of the recovery path;

[0183] After DC A restores the path based on the dynamically calculated routing configuration, it switches the service to the restored path;

[0184] DC A may or may not report the failure of the working path to the SC.

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Abstract

The embodiment of the invention discloses an SDN-based optical transport network protection recovery method and device, and a storage medium. The method comprises the steps that information of a recovery constraint object in an open network foundation ONF model is acquired, and the recovery constraint object at least comprises a protection recovery range field; routing calculation is executed according to the information of the recovery constraint object; and a protection path or a recovery path is configured according to a result of the routing calculation.

Description

technical field [0001] The present invention relates to the technical field of optical fiber communication, in particular to a software-defined network (Software Defined Network, SDN)-based optical transport network protection and restoration method, device and storage medium. Background technique [0002] The optical transport network based on the SDN centralized control architecture has been widely used. The Open Networking Foundation (ONF) defines an information interaction model of an optical transport network, which can be used to describe all network resources. [0003] Especially for cross-domain transmission involving multiple domains, how to perform fault protection and recovery. In the prior art, different manufacturers provide different implementation manners. In this case, the following problems exist: [0004] First: It leads to poor interoperability of different implementation methods. When there are devices from multiple manufacturers in a domain, it is dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04L45/28
CPCH04Q11/0062H04Q11/0005H04B10/032H04Q2011/0081H04Q2011/0086H04Q11/00
Inventor 赵阳李晗王磊
Owner CHINA MOBILE COMM LTD RES INST
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