| 摘要 |
Disclosed in the present invention are a method, an apparatus and a system for detecting packet Signal Degraded (SD), wherein the method includes: a server layer/server sub-layer determining that there is SD on the server layer/server sub-layer itself, and periodically transmitting SD indication information to a destination node of a packet path of a client layer/client sub-layer, wherein the SD indication information is configured to indicate entry of the packet path into an SD state. In the present invention, reliability of the detection result is ensured and the detection process is simplified. |
