Clock Synchronization Configuration

Clock Synchronization configuration involves global and interface-level settings.

ptp hierarchy
Figure 1. Clock Synchronization Configuration Hierarchy

Global Configuration

These commands configure the global clock Synchronization settings for the system.

Syntax:

set system ptp clock <options>

Attribute Description:

Attribute Description

clock g8275.1

Enables ITU-T G.8275.1 clock profile for PTP.

As per ITU-T G.8275.1 profile, the default domain value for the PTP is 24.

clock g8275.1 mode slave

Configures the PTP clock to operate in slave mode.

The example below shows the configuration for enabling PTP (Precision Time Protocol) in slave mode using the g8275.1 profile.

set system ptp clock g8275.1
set system ptp clock g8275.1 mode slave
supervisor@rtbrick.net: cfg> show config system ptp
{
  "rtbrick-config:ptp": {
    "clock": [
      {
        "profile": "g8275.1",
        "mode": "slave"
      }
    ]
  }
}

Interface-level Configuration

These commands enable and configure PTP on specific network interfaces.

Syntax:

set interface <interface-name> <attribute> <value>

Attribute Description

<interface-name>

Name of the network interface.

ptp enable true

Enables (true) clock synchronization for the specified interface

synce enable true

Enables (true) synchronous Ethernet for the specified interface

synce esmc true

Enables (true) ESMC (Ethernet Synchronization Message Channel) for the specified interface

After the clock module is enabled and the clock is configured on the device, you can enable ptp, synce, and synce esmc on the network interface.

The following configuration enables PTP on the network interface named "ifp-0/1/66".

set interface ifp-0/1/66
set interface ifp-0/1/66 ptp enable true
supervisor@rtbrick.net: cfg> show config interface ifp-0/1/66
{
  "rtbrick-config:interface": [
    {
      "name": "ifp-0/1/66",
      "ptp": {
        "enable": "true"
      }
    }
  ]
}

The following configuration enables synce on the network interface named "ifp-0/1/66".

set interface ifp-0/1/66
set interface ifp-0/1/66 sync enable true
supervisor@rtbrick.net: cfg> show config interface ifp-0/1/66
{
  "rtbrick-config:interface": [
    {
      "name": "ifp-0/1/66",
      "sync": {
        "enable": "true"
      }
    }
  ]
}

The following configuration enables synce esmc on the network interface named "ifp-0/1/66".

set interface ifp-0/1/66
set interface ifp-0/1/66 sync synce esmc true
supervisor@rtbrick.net: cfg> show config interface ifp-0/1/66
{
  "rtbrick-config:interface": [
    {
      "name": "ifp-0/1/66",
      "sync": {
        "esmc": "true"
      }
    }
  ]
}