When we use Huawei NE series routers, we sometimes encounter problems. How can these problems be solved? We provide the Troubleshooting Guide to help you.
If you encounter the External Clock Source Cannot Be Tracked, perform the following steps:
1. Check whether the external clock interface is in the normal state.
Run the display ptp all command to check whether the In-status is normal.
§ If In-status is normal, go to step 7.
§ If In-status is abnormal, go to step 2.
2. Check whether the signal type configured on the local device is same with that configured on the external clock source.
Run the display clock config command to check whether the signal type configured on the local device is the same as that configured on the external clock source.
§ If the local device and external clock source have different signal types, run the clock bits-type { bits0 | bits1 | bits2 } { dcls | 1pps { input | output } } in the system view to configure the signal type of the external clock source as the same as that of the local device.
§ If the local device and external clock source have the same signal type, check whether the cable is properly connecting the local device to the external clock source.
If the problem persists, go to Step 3.
3. Perform the following operations based on the signal type.
§ If 1PPS+TOD is adopted, go to Step 4.
§ If DCLS is adopted, go to Step 7.
4. Check whether the TOD protocol configured on the local device is the same as that configured on the external clock source.
Run the display clock config command to check whether the TOD protocol configured on the local device is same with that configured on the external clock source. The clock synchronization can be implemented only when the same TOD protocol is configured on both the local device and external clock source.
§ If the TOD protocols configured on the local device and external clock source are different, run the clock tod protocol { ubx | nmea | ccsa } command to configure the TOD protocol on the local device as the same as that on the external clock source.
§ If the TOD protocols are consistent, go to step 5.
5. Check whether the external clock source can be tracked.
Run the display clock source command to check whether System trace source State is lock mode.
§ If System trace source State is not lock mode, run the display clock config command to check whether sys pll is auto mode.
o If sys pll is not auto mode, run the clock run-mode normal command in the system view to set the clock running mode to normal.
o If sys pll is auto mode, configure frequency source synchronization. If you specify PTP synchronization, the device synchronizes frequency based on 1588v2 clock source selection results. If you specify physical-layer synchronization, the device synchronizes frequency based on physical-layer clock source selection results. For details, see the chapter "1588v2 Configuration" in the Configuration - System Management or "Clock Synchronization Configuration" in the Configuration - Basic Configurations.
§ If System trace source State is lock mode, go to Step 6.
6. Check whether priorities of external clock sources are configured on the external clock interface.
Run the display this command in the system view to check whether the clock priority command is configured.
§ If the clock priority command is not configured, run the clock priority priority-value command to set priorities of external clock sources.
§ If the clock priority command is not configured, go to Step 7.
7. Collect the following information and contact Huawei technical support personnel.
§ Results of the troubleshooting procedure.
§ Configuration files, log files, and alarm files of the devices
For more troubleshooting cases, see: NE40E Troubleshooting Guide V4.0 (VRPv8)
https://support.huawei.com/enterprise/en/doc/EDOC1000177634
