Method and device for restoring service in automatic switched optical network

Abstract

The invention discloses a method and a device for restoring a service in an automatic switched optical network. The method comprises the following steps that: 1, after the service is successfully established, automatically calculating a preset restoration route for the service by using a control plane; 2, detecting whether a management plane is configured with a usable preset restoration route for the service according to a superior command or not, and if the control plane is configured with the usable preset restoration route for the service according to the superior command, automatically deleting the preset restoration route calculated by the control plane and performing a step 3 based on the configured preset restoration route, and if the control plane is not configured with the usable preset restoration route for the service according to the superior command, performing the step 3 based on the preset restoration route calculated by the control plane; and 3, when a service failure is restored, selecting the preset restoration route to restore the service. The device comprises a control plane unit, a management plane unit, a detection unite and a service restoration unit. By the method of the invention, when the service is restored, network resources can be fully used to restore the service, the success ratio of the service restoration is improved, and the service restoration time is shortened.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a service recovery method and device in an automatic switching optical network. Background technique [0002] In the automatic switching optical network, in order to ensure the quality of service recovery, the service recovery route can be preset, that is, the preset recovery route. When the connection in the business fails and is restored, a path check is required before establishing the restored connection. If the recovery route is not pre-calculated for the connection before the connection failure, but the recovery route is calculated after the failure, there may be insufficient resources, the path check fails, and the recovery connection establishment fails, resulting in long-term service interruption. Or when there are sufficient resources and multiple services are restored, the restoration connection checks a route, and resource competition may occur in the establis...

AI Technical Summary

Problems solved by technology

If the recovery route is not pre-calculated for the connection before the connection failure, but the recovery route is calculated after the failure, there may be insufficient resources, the path check fails, and the recovery connection establishment fails, resulting in long-term service interruption.

Or when resources are sufficient and multiple services are restored, the restored connection checks the route to a route, and resource competition may occur in the established restored connection, resulting in the failure of some of the restored connections to be established, and the business is interrupted for a long time

It can be seen that when the connection in the business is restored, if there is no pre-calculated preset restoration route, there may be a long interruption time when the business is restored; when the business is restored, the network resources are not fully utilized reasonably; and when the business volume is large, the network resources are not unified. management, leading to problems such as network resource confusion

At present, the configuration of the preset recovery route can be configured through the management plane. However, this configuration method has the following problems: Since the management plane preset recovery route is completed based on user instructions, the management plane is very slow in the case of heavy traffic. It is difficult to configure preset recovery routes for each service, which leads to the inability to perform preset recovery routes for certain services, resulting in the above-mentioned long interruption time, inability to make full use of network resources reasonably and lack of unified management of network resources, resulting in Confusion etc.

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