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Configuring G.8275.1 Profile

You can configure the G.8275.1 PTP profile for applications requiring accurate phase and time synchronization. It supports the architecture defined in ITU-T G.8275 to enable the distribution of phase and time with full timing support and is based on the second version of PTP defined in [IEEE 1588].

To configure the G8275.1 profile:

  1. In configuration mode, go to the [edit protocols ptp] hierarchy level:
  2. Configure the G.8275.1 profile.
  3. Configure the clock mode as either boundary or ordinary.

    The boundary option signifies that the clock can be both a primary clock and a client clock. The ordinary option signifies that the clock is either a primary clock or a client clock.

  4. Configure the PTP domain option with values from 24 through 43. The default value is 24.
  5. Configure the priority2 option with values from 0 through 255. The default value is 128.

    The priority2 value differentiates and prioritizes the primary clock to avoid confusion when priority1-value is the same for different primary clocks in a network.

  6. Configure stateful interface for boundary clock mode of operation.

    For the configuration to work, the interface you specify must be configured at the [edit interfaces interface-name] hierarchy level.

  7. Configure multicast transmission of Precision Time Protocol (PTP) packets.
  8. Configure the local-priority option. This attribute to be used as a tie-breaker in the dataset comparison algorithm, in the event that all other previous attributes of the datasets being compared are equal.
  9. Specify the encapsulation type for PTP packet transport as Ethernet or IEEE 802.3.
  10. Specify the asymmetry value.

After you have configured the PTP G.8275.1 profile, enter the commit command from configuration mode.