# PTP settings

## 1. Summary

This page is for configuring PTP (Precision Time Protocol).

This product supports PTPv2 (IEEE1588-2008).

PTP cannot be configured when the stack function is enabled.

Using PTP with a spanning tree does not recommend.

## 2. Top page

This is the top page for PTP.

### 2.1. System settings

- Displays the PTP settings for the system.

- The table items are explained below.

  - PTP function for the entire system

    - Displays whether the PTP function is enabled for the entire system.

  - PTP operation mode

    - Displays the PTP operation mode of this unit.

    - The following modes are supported for operation mode.

      - Transparent Clock (End-to-End)

      - Boundary Clock (End-to-End)

  - Sync-E input port

    - Displays the Sync-E input port.

    - This item is shown only if the PTP operation mode is boundary clock.

  - Profile

    - Displays the profile name when the recommended setting of profile is applied.

    - The supported profiles are as follows.

      - Default

      - SMPTE

    - This item is shown only if the PTP operation mode is boundary clock.

  - Transport protocol

    - Displays the frame format used to transfer PTP messages.

  - Domain number

    - Displays the number to differentiate PTP domain.

    - This item is shown only if the PTP operation mode is boundary clock.

  - BTCA

    - Displays the setting of BTCA (Best Time Transmitter Clock Algorithm).

    - Only Default is supported.

    - This item is shown only if the PTP operation mode is boundary clock.

  - Clock priority

    - Displays the values of priority 1 and priority 2 used for BTCA selection.

    - This item is shown only if the PTP operation mode is boundary clock.

- Press the "Setting" button to display the page for configuring the system.

### 2.2. Interface settings

- Displays the PTP configuration for the interface.

- The table items are explained below.

  - Port

    - Displays the interface name.

  - PTP function

    - Displays whether the PTP function is enabled for the target interface.

  - Profile

    - Displays the profile name when the recommended setting of profile is applied.

    - The supported profiles are as follows.

      - Default

      - SMPTE

    - Pressing the open/close button () displays the following settings for that interface.

      - Announce Transmission Interval
        Displays the Announce message transmission interval

      - Announce Reception Timeout
        Displays the number of timeouts for receiving Announce messages.

      - Sync Transmission Interval
        Displays the Sync message transmission interval.

      - Delay-Request Transmission Interval
        Displays the Delay-Request message transmission interval.

    - This item is shown only if the PTP operation mode is boundary clock.

- Press the "Setting" button to display the page for configuring the selected interface.

- Press the "Specify all" button to configure the settings for all interfaces with the check box selected.

- Press the "Return to defaults" button to initialize the settings for all interfaces with the check box selected.

- The ports belonging to a logical interface cannot be configured.

## 3. System settings page

This page is for configuring the PTP settings for the system.

Enter the settings, and then press the "Confirm" button.

If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

### 3.1. System settings

- PTP function for the entire system

  - Specify whether to enable or disable the PTP function for the entire system.

- PTP operation mode

  - The following operation modes are supported.

    - Transparent Clock (End-to-End)

    - Boundary Clock (End-to-End)

- Sync-E input port

  - Select the port used to input Sync-E.

    - The ports belonging to a logical interface cannot be specified.

  - You can specify the link speed used for input on SFP+ port and SFP28 port.

    - Synchronization is enabled only if the specified link speed matches the actual port link speed.

- Profile

  - Select the profile to apply to the system and interface.

  - The following profiles are supported.

    - Default

      - Transfer protocol: UPv4 UDP

      - Domain number: 0

      - Priority 1: 128

      - Priority 2: 128

    - SMPTE

      - Transfer protocol: UPv4 UDP

      - Domain number: 127

      - Priority 1: 128

      - Priority 2: 128

  - Press the "Select" button to select the interfaces which the recommended setting of profile is applied.

  - The recommended setting according to the profile is applied for the selected interfaces.

    - For Default profile

      - Announce transmission interval: 2 seconds

      - Announce reception timeout: 3 times

      - Sync transmission interval: 1 second

      - Delay-Request transmission interval: 1 second

    - For SMPTE profile

      - Announce transmission interval: 1/4 seconds

      - Announce reception timeout: 3 times

      - Sync transmission interval: 1/8 seconds

      - Delay-Request transmission interval: 1/8 seconds

  - This item is shown only if the PTP operation mode is boundary clock.

- Transport protocol

  - Specify the frame format used to transfer PTP messages.

- Domain number

  - Set the number to differentiate PTP domain.

  - The input range is from 0 to 127.

  - This item is shown only if the PTP operation mode is boundary clock.

- Clock priority

  - Set the values of priority 1 and priority 2 used for BTCA selection.

  - The input range is from 0 to 255.

  - This item is shown only if the PTP operation mode is boundary clock.

## 4. Interface settings page

This page is for configuring the PTP settings for the interface.

Enter the settings, and then press the "Confirm" button.

If there are no mistakes in the input content of the confirmation screen, press the "OK" button.

### 4.1. Interface settings

- Port

  - Displays the port name to configure the settings.

- PTP function

  - Specify whether to enable or disable the PTP function for the target port.

  - For the PTP function to work, you need to enable the entire system’s PTP function as well.

- Profile

  - Select the profile to apply to the interface.

  - The following profiles are supported.

    - Default

      - Announce transmission interval: 2 seconds

      - Announce reception timeout: 3 times

      - Sync transmission interval: 1 second

      - Delay-Request transmission interval: 1 second

    - SMPTE

      - Announce transmission interval: 1/4 seconds

      - Announce reception timeout: 3 times

      - Sync transmission interval: 1/8 seconds

      - Delay-Request transmission interval: 1/8 seconds

  - This item is shown only if the PTP operation mode is boundary clock.

- Announce transmission interval

  - Set the Announce message transmission interval.

  - This item is shown only if the PTP operation mode is boundary clock.

- Announce reception timeout

  - Set the number of Announce message reception timeout.

  - The input range is from 2 to 10.

  - This item is shown only if the PTP operation mode is boundary clock.

- Sync transmission interval

  - Set the Sync message transmission interval.

  - This item is shown only if the PTP operation mode is boundary clock.

- Delay-Request transmission interval

  - Set the Delay-Request message transmission interval.

  - This item is shown only if the PTP operation mode is boundary clock.

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