Configuring PTP Globally
Context
If different carriers synchronize clocks with clients through the switch, configure the switch as a TCandBC. On a TCandBC, a BC interface receives clock signals from the master clock and sends the clock signals to a downstream device, and
a TC interface only transmits clock signals. A TC interface on a TCandBC is responsible for forwarding PTP messages of PTP domains.
Procedure
- Run system-view
The system view is displayed.
- Run ptp enable
PTP is enabled globally.
By default, PTP is not enabled globally on a device.
- Run ptp device-type tcandbc slot slot-id
The device type is configured as TCandBC.
By default, no device type is configured for a PTP device. - Run ptp domain domain-value
The domain to which the BC interface of the TCandBC belongs is configured.
By default, a PTP device belongs to domain 0.
Devices that perform clock synchronization through PTP messages must belong to the same PTP domain. - (Optional) Run ptp virtual-clock-id clock-id-value slot slot-id
A virtual clock ID is set for the device.
By default, no virtual clock ID is configured for a PTP device, and the system generates a clock ID based on the MAC address of the device. You can also configure a virtual clock ID to identify the device. When running the ptp virtual-clock-id command, ensure that the configured virtual clock ID is unique in the entire PTP domain.