Service path control method and system based on SDH and storage medium

Abstract

The invention discloses a service path control method and system based on SDH, and a storage medium, and the method comprises the steps: generating a service ID for identifying the service of a current service path according to a service entrance and a service exit; after the service calculation is completed, storing each section of cross path through which the service passes in real time by usinga service routing data structure bound with the service ID; and when the service is recalculated, judging whether the service stores a route or not, if so, calculating and recovering the service according to a path in the route, and if not, searching an idle path to calculate the service. According to the invention, the service route bound with the service ID is used for recording the crossed path through which the current service passes in the system, and after the system is reset and when the service needs to be recalculated, the route is preferentially used for recovering the service, so that the existing service path is not changed, and instantaneous interruption or error codes caused by adjustment of the service path are avoided.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to an SDH-based service path control method, system and storage medium. Background technique [0002] In the field of optical fiber communication, Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) is a very important communication protocol in modern communication means. It is commonly used in the communication equipment of the backbone layer network and the access layer network of telecom operators; it can also be used in the private communication networks of electric power, banks, large-scale industrial and mining, petrochemical and other enterprises. These devices using the SDH communication protocol use their communication Wide bandwidth, stable and reliable equipment, manageable, maintainable and other aspects of good performance, has been widely used. [0003] In the optical communication equipment using SDH as the communication protocol, t...

AI Technical Summary

Problems solved by technology

[0005] The search method of low-level idle resources is usually searched in the order of the bus, which brings about the problem that after a series of services are added and deleted, the low-level cross-connect resources that were originally occupied at the beginning are free. If the device is reset at this time After restart (only CPU restart, not power failure), the user configuration database will be reloaded, and the cross paths will be recalculated. Some service paths that have passed through low-cost cross paths may change, resulting in instantaneous service interruption or bit errors (bit errors are Refers to a small amount of error information in the process of data transfer, which can be easily found with instruments. For example, during a call, if there is a bit error on the call line, you will hear noise, noise, etc., and the result of the cross calculation will be sent to the hardware Above, a path is formed for the user's communication. If the path of this path is changed, some short-term communication data errors will be formed in the process, also called error codes)

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