A service path control method, system and storage medium based on SDH

Abstract

The invention discloses an SDH-based service path control method, system and storage medium. The method includes: generating a service ID to identify the service of the current service path according to the service entry and service exit; after the service calculation is completed, Use the service routing data structure bound to the service ID to save in real time each section of the cross-path that the service passes through; when the service is recalculated, determine whether the service has a route saved, and if so, calculate according to the path in the route and Restore the service, if not, search for an idle path to calculate the service. The present invention uses the service route bound to the service ID to record the cross path of the current service in the system. After the system is reset, when the service needs to be recalculated, the route is preferentially used to restore the service, ensuring that the existing service path will not occur Changes to avoid momentary breaks or bit errors caused by service path adjustments.

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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