Example: Configure Precision Time Protocol

CLI Quick Configuration

To quickly configure PTP on an interface, copy the following commands, paste them in a text file, remove any line breaks, and then copy and paste the commands into the CLI.

[edit]
set interfaces ge-0/1/0 unit 0 family inet address 192.0.2.5/24
set interfaces ge-0/1/5 unit 0 family inet address 198.51.100.5/24
set protocols ptp clock-mode boundary priority1 1 priority2 2 domain 0 unicast-negotiation
set protocols ptp slave interface ge-0/1/0.0 unicast-mode transport ipv4
set protocols ptp slave announce-timeout 2 delay-request –4 frequency-only
set protocols ptp slave interface ge-0/1/0.0 unicast-mode clock-source 192.0.2.3 local-ip-address 192.0.2.5
set protocols ptp master interface ge-0/1/5.0 unicast-mode transport ipv4
set protocols ptp master announce-interval 0 clock-step one-step sync-interval 0
set protocols ptp master interface ge-0/1/5.0 unicast-mode clock-client 198.51.100.3 local-ip-address 198.51.100.5

Step-by-Step Procedure

The following example requires you to navigate various levels in the configuration hierarchy. For instructions on how to do that, see Using the CLI Editor in Configuration Mode in the CLI User Guide.

To configure PTP, perform the following tasks:

1. Configure two interfaces and assign IP addresses to it.

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   [edit]
   user@host# set interfaces ge-0/1/0 unit 0 family inet address 192.0.2.5/24
   user@host# set interfaces ge-0/1/5 unit 0 family inet address 198.51.100.5/24
   

2. Configure the clock mode, priorities, domain, and unicast negotiation options for PTP.

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   [edit protocols ptp]
   user@host# set clock-mode boundary priority1 1 priority2 2 domain 0 unicast-negotiation
   

3. Configure the timeReceiver interface

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   [edit protocols ptp slave]
   user@host# set interface ge-0/1/0.0 unicast-mode transport ipv4
   

4. Configure the announce timeout, delay request, and frequency synchronization parameters for the timeReceiver.

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   [edit protocols ptp slave]
   user@host# set announce-timeout 2 delay-request -4 frequency-only 
   

5. Assign the IP address of the remote timeTransmitter using the clock-source option and the IP address of the local interface acting as the timeReceiver.

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   [edit protocols ptp slave interface ge-0/1/0.0 unicast-mode]
   user@host# set clock-source 192.0.2.3 local-ip-address 192.0.2.5
   

6. Configure the timeTransmitter interface

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   [edit protocols ptp master]
   user@host# set interface ge-0/1/5.0 unicast-mode transport ipv4
   

7. Configure the announce interval, clock step, and synchronous interval parameters for the timeTransmitter.

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   [edit protocols ptp master]
   user@host# set announce-interval 0 clock-step one-step sync-interval 0 
   

8. Configure the remote PTP host that will receive time from the PTP timeTransmitter using the clock-client option and the IP address of the local interface acting as timeTransmitter.

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   [edit protocols ptp master interface ge-0/1/5.0 unicast-mode]
   user@host# set clock-client 198.51.100.3 local-ip-address 198.51.100.5
   

Result

Display the results of the configuration:

[edit protocols ptp]
user@host# show 
clock-mode boundary;
priority1 1;
priority2 2;
domain 0;
unicast-negotiation;
slave {
    frequency-only;
    delay-request -4;
    announce-timeout 2;
    interface ge-0/1/0.0 {
        unicast-mode {
            transport ipv4;
            clock-source 192.0.2.3 local-ip-address 192.0.2.5;
        }
    }
}
master {
    announce-interval 0;
    sync-interval 0;
    clock-step one-step;
    interface ge-0/1/5.0 {
        unicast-mode {
            transport ipv4;
            clock-client 198.51.100.3 local-ip-address 198.51.100.5;
        }
    }
}

Verify PTP Clock Details

• Purpose
• Action
• Meaning

Verify the Lock Status of the Member

• Purpose
• Action
• Meaning

Verify the PTP Options on the Member

• Purpose
• Action
• Meaning

Verify the PTP Options and the Current Status of the Primary

• Purpose
• Action
• Meaning

Verify the Number and Status of the PTP Ports

• Purpose
• Action
• Meaning