METHOD AND SYSTEM FOR SERVICE PROTECTION

摘要

A method for service protection is disclosed, which is applied to a 1:n switching technique. The method includes the following steps. A source end sends a service to a work transmission entity, the work transmission entity performs performance monitoring through the transmitted service, a sink end receives the service from the work transmission entity; when a Signal Degrade (SD) fault occurs at the work transmission entity, the source end sends the service to the work transmission entity and a protection transmission entity simultaneously, and the sink end selects to receive the service from the protection transmission entity; the protection transmission entity performs the performance monitoring through the transmitted service; when the SD fault occurs at both the work transmission entity and the protection transmission entity, the sink end still receives the service from the protection transmission entity. A system for service protection is also disclosed. Technical solutions enable the service to get valid protection during the transmission process, and avoid frequent switching of the service, thereby improving the service quality.