SYSTEM, METHOD AND DEVICE FOR AUTOMATIC PROTECTION SWITCHING

摘要

The present invention relates to network management and discloses a system, method, and device for Automatic Protection Switching (APS). The system includes a sending device and a receiving device. The sending device includes a first sending line card and a second sending line card. The receiving device includes a first receiving line card and a second receiving line card. The method includes these steps: the first receiving line card and the second receiving line card at the receiver check whether a continuity check message is received from the transmitter; and service switching is performed if the first receiving line card does not receive the continuity check message but the second receiving line card receives the continuity check message within a preset time. The receiving device includes a first receiving line card and a second receiving line card. In the embodiments of the present invention, the first receiving line card and the second receiving line card check arrival of continuity check messages, and perform centralized switching control on the line cards automatically according to the check result, thus improving APS efficiency and reliability of a PS-based transport network.