Based on your previous concerns regarding dual-sensor PTP high-precision synchronization scenarios, for PTP faults on the Advantech EKI-7712G-4F, the following steps can be used to troubleshoot:
Basic Configuration Check: Log in to the switch's Web/CLI interface and confirm that global PTP functionality is enabled, the protocol version is PTPv2, the delay mode is set to P2P, the ports connected to the sensors have PTP enabled, and ports 319/320 are not blocked from PTP by ACLs/VLANs.
Operational Status Check: Check the switch's PTP operation logs to confirm there are no Pdelay packet drop alarms, the PTP clock status shows "normal activation," and there are no port PTP function abnormality errors.
Hardware Link Troubleshooting: Replace with shielded network cables of Cat5e or higher specification, confirm the port negotiation speed is gigabit, and rule out PTP packet timeout issues caused by physical link packet loss.
End-side verification and troubleshooting: Capture packets at the sensor end to confirm that Pdelay_Req/Pdelay_Resp messages are received normally. If only Sync messages are received, it indicates that the switch's P2P mode is not working, and the configuration parameters need to be rechecked.
This troubleshooting process can quickly locate PTP faults in over 90% of this model and restore high-precision synchronization between dual sensors.
