Configure PTP Dynamic Ports for Ethernet Encapsulation

date_range 20-Dec-24

arrow_backward

arrow_forward

For PTP over Ethernet, you can also configure a port to function as both a timeReceiver port and a timeTransmitter port. This type of port is called a stateful port, or a bidirectional port. Such a stateful port enables the transfer of frequency for synchronization services, in addition to time and phase alignment, when PTP functionality is not hop-by-hop and you have provisioned timeTransmitter and timeReceiver roles or interfaces.

To configure PTP over Ethernet with dynamic or bidirectional ports for multicast mode of transmission, you must include the multicast-mode statement at the [edit protocols ptp stateful interface interface-name] hierarchy level.

To enable a node to function as both a timeTransmitter and a timeReceiver port in PTP over Ethernet networks:

Configure the interface on which to respond to downstream PTP timeReceiver ports or timeReceiver clocks.
```
[edit protocols ptp stateful]
user@host# edit interface interface-name
```
Note:
For the configuration to work, the interface you specify must be configured at the [edit interfaces interface-name] hierarchy level.
Configure the upstream multicast PTP dynamic clock source parameters.
```
[edit protocols ptp stateful interface interface-name]
user@host# edit multicast-mode
```
Specify the encapsulation type for PTP packet transport as Ethernet or IEEE 802.3. This statement is mandatory.
```
[edit protocols ptp stateful interface interface-name multicast-mode]
user@host# set transport ieee-802.3
```
Alternatively, specify the encapsulation type as Ethernet with the link-local multicast address to be used in the sending of PTP messages. If you specify the link-local attribute, the timeTransmitter clock chooses either of the two MAC addresses defined in the IEEE 1588-2008 standard. When you configure this option, the system attempts to use the 01 -80-C2-00-00-0E MAC address (link-local multicast MAC address) for multicast transmission. If this MAC address is not available, the 01-1B-19-00-00-00 address (standard Ethernet multicast address) is used as the second priority. The standard Ethernet multicast address is used by default. You need to explicitly configure the link-local multicast address.
```
[edit protocols ptp stateful interface interface-name multicast-mode]
user@host# set transport ieee-802.3 link-local
```

After you have configured the PTP over Ethernet timeReceiver clock interface, enter the commit command from configuration mode.

arrow_backward PREVIOUS Guidelines to Configure PTP over Ethernet

NEXT arrow_forward Configure PTP Multicast TimeTransmitter and TimeReceiver Ports for Ethernet Encapsulation

Timing and Synchronization Guide

Configure PTP Dynamic Ports for Ethernet Encapsulation

Stay in touch

Helped me install or use the product
Accelerated my deployment

Discuss the product with a co-worker
Make a purchase inquiry