the service error prevention information in the embodiment refers to the jx byte of course other detection methods may also be applied in the present invention establishment of the service re routing recovery of the service switching of the service and determining of the error connection alarm information are all performed by the ason control plane while error connection detection is performed by the transport plane the present invention is characterized in that the configuration of service error prevention information of the start node and end node of the service is automatically completed by the control plane the node that initiates configuration of the service error prevention information may be the start node or the end node of the service the node that initiates the configuration needs to send the service error prevention information to the opposite node of the service the opposite node of the service refers to a counterpart service node of the service node that initiates the configuration if the start node of the service initiates the configuration process then the opposite node of the service is the end node of the service the start node and end node of the service respectively issue a configuration request to their respective transport planes to configure the service error prevention information on the start node and end node of the service the service error prevention information can only be valid after being successfully configured on both the start node and the end node the process of synchronously configuring the service error.