| 摘要 |
Disclosed are a method and device for detecting link loopback of a PON system. The method comprises: enabling a loopback detection function of a core swap disc, and respectively sending first-level detection messages to all uplink ports and slot ports of all service discs; if the returned first-level detection messages are not received, ending detection; otherwise, confirming that there is loopback in a PON system; if there is loopback between the uplink ports, ending the detection; if there is loopback between the uplink ports and the slot ports or among all the slot ports, enabling loopback detection functions of service cards, each service card respectively sending a second-level detection message to a designated ONU, and if all the service cards do not receive the returned second-level detection message, ending the detection; otherwise, accurately positioning a service card with generated loopback and the designated ONU according to an ONU authorization number carried in the second-level detection message and the slot number of the service card. In the present invention, the implementation process is simple, and a detection result can be reported in time, thereby greatly increasing the efficiency of detecting link loopback of a PON system. |
