Configuring the Manual or Forcible Clock Source Selection Mode

Context

By default, the NetEngine 8000 F uses the automatic clock source selection algorithm to determine a clock source to be traced. You can also manually or forcibly specify a clock source to be traced based on the quality level of clock sources.

If the status of a forcibly specified clock source is not normal or its SSM level is dnu, the system clock works in the hold state.

If the status of a manually specified clock source is neither normal nor holdoff, or its SSM level is not the highest, this manually specified clock source does not take effect.

Procedure

Run system-view
The system view is displayed.
Run clock { manual | force } 2msync-1 source interface { interface-name | interface-type interface-number }

A clock source is manually or forcibly specified for 2M synchronous PLL-1 clocks.

The clock manual source command configuration is not saved in the configuration file. You can run the display clock config command to check the configurations. If the specified clock source becomes invalid, the system automatically uses the automatic clock source selection mode. After the device is restarted, the clock manual source command configuration is not restored, and the system uses the default automatic clock source selection mode. After the device is upgraded to this version from an earlier version, the clock manual source command run in the earlier version no longer takes effect, and the system uses the default automatic clock source selection mode.
Run clock { manual | force } source {bits0 | ptp | interface interface-type interface-number }
A clock source is manually or forcibly specified for system clocks.

The clock manual source command configuration is not saved in the configuration file. You can run the display clock config command to check the configurations. If the specified clock source becomes invalid, the system automatically uses the automatic clock source selection mode. After the device is restarted, the clock manual source command configuration is not restored, and the system uses the default automatic clock source selection mode. After the device is upgraded to this version from an earlier version, the clock manual source command run in the earlier version no longer takes effect, and the system uses the default automatic clock source selection mode.
Run commit
The configuration is committed.