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play_arrow Overview
play_arrow Precision Time Protocol
- play_arrow Precision Time Protocol Overview
- play_arrow Precision Time Protocol Clocks
- play_arrow Precision Time Protocol Profiles
- play_arrow PHY Timestamping
- play_arrow Precision Time Protocol over Ethernet
- play_arrow Precision Time Protocol Additional Features
play_arrow Global Navigation Satellite System (GNSS)
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  - Global Positioning System (GPS) on Routing Platforms
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  - Integrated Global Navigation Satellite System (GNSS) on Routing Platforms
- play_arrow GNSS Configuration for Routers Using External GNSS Receiver
- play_arrow Assisted Partial Timing Support (APTS) on Routing Platforms
play_arrow Network Time Protocol
- play_arrow NTP Concepts
- play_arrow NTP Configuration Examples
play_arrow Synchronous Ethernet
- play_arrow Synchronous Ethernet Overview
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  - Synchronous Ethernet on 10-Gigabit Ethernet MIC
  - Example: Configure Framing Mode for Synchronous Ethernet with 10-Gigabit Ethernet MIC
play_arrow Clock Synchronization
- play_arrow Clock Synchronization Concepts
- play_arrow Clock Synchronization for ACX Series Routers
  - Configure External Clock Synchronization for ACX Series Routers
- play_arrow Clock Synchronization for MX Series Routers
  - Configure External Clock Synchronization for MX Series Routers
- play_arrow Clock Synchronization for PTX Series Routers
  - Clock Sources for PTX Series Routers
  - Synchronize Internal Stratum 3 Clock to External Clock Sources on PTX Series Routers
- play_arrow Centralized Clocking
play_arrow Hybrid Mode
- play_arrow Hybrid Mode Overview
  - Hybrid Mode
  - Guidelines to Configure Hybrid Mode on ACX Series Routers
- play_arrow Hybrid Mode and ESMC Quality-Level Mapping
play_arrow Configuration Statements and Operational Commands
- Junos CLI Reference Overview
play_arrow Appendix
- Appendix - Inclusive Terms

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Configure PTP Media Profiles

date_range 20-Dec-24

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Note:

When you enable any of the PTP media profiles (AES67, AES67+SMPTE, or SMPTE), you cannot enable any other profile.

Configure AES67, SMPTE, and AES67+SMPTE Profiles

This topic provides the configuration necessary to enable any of the three media profiles (AES67, SMPTE, and AES67+SMPTE), and includes the following sections.

Optional and Required Parameters for SMPTE ST-2059-2, AES67, and AES67+SMPTE ST-2059-2 Profiles
Configure PTP Media Profile

Optional and Required Parameters for SMPTE ST-2059-2, AES67, and AES67+SMPTE ST-2059-2 Profiles

Table 1 and Table 2 provide default values and ranges for optional and required PTP parameters:

Table 1: Defaults and Ranges for PTP Parameters
Profile	SM (Synchronization Metadata) TLV	Domain	Priority1	Priority2
SMPTE	Yes	Default: 127 Range: 0 through 127	Default: 128 Range: 0 through 255	Default: 128 Range: 0 through 255
AES67	No	Default: 0 Range: 0 through 127	Default: 128 Range: 0 through 255	Default: 128 Range: 0 through 255
AES67+SMPTE	Yes	Default: 0 Range: 0 through 127	Default: 128 Range: 0 through 255	Default: 128 Range: 0 through 255

Table 2: Defaults and Ranges for PTP Parameters
Profile	Announce	Announce Timeout	Sync	Delay-Req
SMPTE	Default: -2 Range: -3 through 1	Default: 3 Range: 2 through 10	Default: -3 Range: -7 through -1	Default: -3 Range: -7 through -3
AES67	Default: 1 Range: 0 through 4	Default: 3 Range: 2 through 10	Default: -3 Range: -4 through 1	Default: -3 Range: -7 through -3
AES67+SMPTE	Default: 0 Range: 0 through 1	Default: 3 Range: 2 through 10	Default: -3 Range: -4 through -1	Default: -3 Range: -7 through -3

Configure PTP Media Profile

To configure the any of the media profiles:

Note:

On the QFX Series, when you configure either a timeTransmitter or timeReceiver port, it must be on the same subnet as the remote device to which it is connected.

Note:

When either the enterprise or any of the media profiles are enabled, the timeTransmitter and timeReceiver ports must be configured in multicast-mode. The timeTransmitter sends the announce and sync packets as multicast IP packets, but the QFX Series timeReceiver will send the delay-req packets as unicast IP packets.

In configuration mode, go to the [edit protocols ptp] hierarchy level:
```
[edit]
user@host# edit protocols ptp
```
Configure the clock mode as either boundary or ordinary. This attribute is mandatory and has no default value.
The boundary option signifies that both timeTransmitter and timeReceiver must be configured. The ordinary option signifies that only the timeTransmitter, or only the timeReceiver, must be configured.

For example:
```
[edit protocols ptp]
user@host# set clock-mode (boundary | ordinary)
```
Configure the profile type.
Configuring the profile type is mandatory.
```
[edit protocols ptp]
user@host# set profile-type (aes67 | smpte | aes67-smpte)
```

Configure the clock mode.

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[edit protocols ptp]
user@host# set clock-mode (boundary | ordinary)

Configure the interface for the timeReceiver.

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[edit protocols ptp ]
user@host# set slave interface interface-name

Configure the multicast-mode option for the timeReceiver.
```
[edit protocols ptp slave interface interface-name]
user@host# set multicast-mode
```
Configure the transport option in multicast-mode as IPv4.
```
[edit protocols ptp slave interface interface-name multicast--mode]
user@host# set transport ipv4
```
Configure the IP address of the interface acting as the local PTP timeReceiver port.
```
[edit protocols ptp slave interface interface-name multicast-mode]
user@host# set local-ip-address local-ip-address
```
Note:
You must also configure this IP address at the [edit interfaces interface-name] hierarchy level.
Configure the interface for the timeTransmitter.
```
[edit protocols ptp master]
user@host# set interface interface-name
```

Configure the multicast-mode option for the timeTransmitter.

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[edit protocols ptp master interface interface-name]
user@host# set multicast-mode

Configure the transport option in multicast-mode as IPv4.
```
[edit protocols ptp master interface interface-name multicast-mode]
user@host# set transport ipv4
```
Configure the local IP address for the timeTransmitter.
Note:
You must also configure this IP address at the [edit interfaces interface-name] hierarchy level.
```
[edit protocols ptp master interface interface-name multicast-mode]
user@host# set local-ip-address local IP address
```
(Optional) Configure the PTP domain option.
```
[edit protocols ptp]
user@host# set domain domain-value
```
(Optional) Configure the priority1 option.
The priority1 value determines the best timeTransmitter clock. The priority1-value is also advertised in the timeTransmitter clock’s announce message to other timeReceiver clocks.
```
[edit protocols ptp]
user@host# set priority1 priority1-value
```
(Optional) Configure the priority2 option.
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.
```
[edit protocols ptp]
user@host# set priority2 priority2-value
```
(Optional) Configure the announce-timeout option in the timeReceiver node.
The announce timeout value signifies the number of times an announce interval message has to pass through the timeReceiver without receiving the announce message—that is, the timeout period for announce messages.
```
[edit protocols ptp slave]
user@host# set announce-timeout announce-timeout-value
```
(Optional) Specify the log mean interval between announce messages.
The timeTransmitter boundary clock sends announce messages to manual timeReceiver clocks as specified in the announce-interval value.
```
[edit protocols ptp master]
user@host# set announce-interval announce-interval-value
```
(Optional) Configure the sync interval option for the timeTransmitter clock.
The sync interval is the logarithmic mean interval between synchronous messages that is sent by the timeTransmitter.
```
[edit protocols ptp master]
user@host# set sync-interval sync-interval-value
```
(Optional) Configure the delay-request option in the timeReceiver node.
The delay request value is the logarithmic mean interval in seconds between the delay request messages sent by the timeReceiver to the timeTransmitter.
```
[edit protocols ptp slave]
user@host# set delay-request delay-request-value
```
Verify the lock status of the timeReceiver.
Note:
On the QFX Series, the timeReceiver will not lock to the timeTransmitter unless at least eight sync packets per second are received from the timeTransmitter.

For example:
```
user@switch> show ptp lock-status detail
Lock Status:
 
Lock State    : 5 (PHASE ALIGNED)
Phase offset  : -0.000000202 sec
```
The output shows that the lock state is aligned.

Verify the status of the timeTransmitter.

For example:

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user@switch> show ptp master detail
PTP Master Interface Details:
Interface  : et-0/0/0:31.0   
Status     : Master, Active
Clock Info : 
Local Address: 192.168.99.42  Status: Configured, Master, Active   
Remote Address: 192.168.1.12    Status: Configured, Slave, Active
Total Remote Slaves: 1

The output shows that the timeTransmitter is active.

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Timing and Synchronization Guide

Configure PTP Media Profiles

Configure AES67, SMPTE, and AES67+SMPTE Profiles

Optional and Required Parameters for SMPTE ST-2059-2, AES67, and AES67+SMPTE ST-2059-2 Profiles

Configure PTP Media Profile

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