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Configure G.8275.1 Profile

This topic details the steps to configure SyncE, PTP, and PTPoLAG on 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].

Configure G.8275.1 PTP profile

To configure G.8275.1 profile in hybrid mode, see the steps outlined in Configure the Router in Hybrid Mode before you proceed with the steps give below.

Follow the steps below to configure the G.8275.1 PTP 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 timeTransmitter clock and a timeReceiver clock. The ordinary option signifies that the clock is either a timeTransmitter clock or a timeReceiver 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 timeTransmitter clock to avoid confusion when priority1-value is the same for different timeTransmitter clocks in a network.

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

    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.

Configure G.8275.1 PTPoLAG profile

  1. In the configuration mode, configure the aggregate interface:
  2. In configuration mode, go to the [edit protocols ptp] hierarchy level to configure PTP with G.8275.1 profile. The timeReceiver clock is configured on an aggregate interface:
  3. Optionally, configure non-revertive switchover for LAG. If configured, it enables non-revertive switchover for LAG, that is if primary link goes down, the secondary link continues to stay as active link, even when the primary link comes back up. If not configured, the AE link shall switchover to primary from secondary as soon as the primary link becomes available.