A maintenance method upon service alarm generation in automatic switching optical network system

Abstract

The invention discloses a method for maintenance during the occurrence of alarms arising from services in an ASON system, which includes that: after a service is established successfully, a head node sets its own alarm surveillance and respectively requires a middle node and an end node to set alarm surveillances thereof; the middle node and the end node set respective alarm surveillance according to the requests of the head node; when alarms happen to the middle node and / or the end node, the alarm information affecting the service is notified to the head node; the head node institutes service maintenance strategies for the service according to the received alarm information, the alarm information from the head node and the protection and recovering strategies prearranged by the head node, and notified the end node of the service maintenance strategies; at last, the head node and the end node carry out related maintenance operation in line with the service maintenance strategies. Through peer-to-peer communications by information notification between any nodes of the service, the invention reaches the targets of transmitting alarm information quickly, reducing interruption or intermittent interruption of the service and reducing opportunities of remnant connections of transmission resources.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a maintenance method when a service generates an alarm in an ASON (Automatic Switched Optical Network, Automatically Switched Optical Network) system. Background technique [0002] ASON network has a basic feature: the control plane is fully responsible for service maintenance (including service establishment, deletion, protection and recovery, etc.), that is, the establishment of signaling channels, resource application, cross-connection configuration, etc. are all managed by the control plane. In practical applications, the control plane and the transport plane are often separated. Therefore, when an alarm is generated due to a service failure on the transport plane, how can the control plane obtain the alarm information in a timely and correct manner, and perform service maintenance reasonably, thereby reducing service It is very necessary to eliminate the interruption or ...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a maintenance method when a service generates an alarm in an automatic switching optical network system, which solves the problems of slow transmission of alarm information, service interruption or instantaneous disconnection, and generation of residual connections in the prior art

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