Configure PTP Multicast TimeTransmitter and TimeReceiver Ports for Ethernet Encapsulation
On an ACX Series router, you can configure a Precision Time Protocol (PTP) timeTransmitter boundary clock with IEEE 802.3 or Ethernet encapsulation of PTP messages to the timeReceiver clocks (ordinary and boundary) so that they can establish their relative time offset from this timeTransmitter's clock or clock reference. PTP over Ethernet uses multicast addresses for communication of PTP messages between the timeReceiver clock and the timeTransmitter clock. The timeReceiver clock automatically learns of timeTransmitter clocks in the network, is immediately able to receive the multicast messages from the timeTransmitter clock, and can begin sending messages to the timeTransmitter clock without any pre-provisioning. The timeTransmitter boundary clock synchronizes time through a timeReceiver boundary port.
To configure PTP over Ethernet with multicast timeTransmitter and timeReceiver ports, you
must include the multicast-mode transport ieee-802.3
statement at the
[edit protocols ptp master interface
interface-name]
and [edit protocols ptp slave
interface interface-name]
hierarchy levels,
respectively.
To configure a PTP over Ethernet timeTransmitter boundary clock and timeReceiver boundary clock for multicast transmission, complete the following tasks:
Configure the PTP over Ethernet TimeTransmitter Boundary Clock Parameters
To configure the parameters of a PTP over Ethernet timeTransmitter boundary clock:
After you have configured the PTP timeTransmitter boundary clock parameters,
enter the commit
command from configuration mode. To complete
the configuration of the timeTransmitter boundary clock, complete Configure the PTP over Ethernet TimeTransmitter Boundary Clock Interface.
Configure the PTP over Ethernet TimeTransmitter Boundary Clock Interface
After you configured the timeTransmitter boundary clock parameters for PTP over Ethernet with multicast transmission of PTP traffic, complete the configuration of the timeTransmitter boundary clock by configuring an interface to act in the role of the timeTransmitter clock.
To configure a PTP over Ethernet timeTransmitter boundary clock interface:
After you have configured the PTP over Ethernet timeTransmitter clock interface,
enter the commit
command from configuration mode.
Configure the PTP over Ethernet TimeReceiver Clock Parameters
An interface on which the timeTransmitter clock is configured is called a timeTransmitter interface and an interface on which the timeReceiver clock is configured is called a timeReceiver interface. A timeTransmitter interface functions as the timeTransmitter port and a timeReceiver interface functions as the timeReceiver port. Because PTP over Ethernet uses multicast addresses, a timeReceiver port can automatically start receiving the multicast announce messages transmitted by the timeTransmitter ports on a network and can also start communication with the timeTransmitter port with minimal or no configuration. You can optionally configure these settings for a timeReceiver port that communicates with the timeTransmitter ports using PTP over Ethernet.
To configure a PTP over Ethernet timeReceiver clock.
After you have configured the PTP timeReceiver clock parameters, enter the
commit
command in configuration mode. To complete the
configuration of the timeReceiver clock, complete Configure PTP over Ethernet TimeReceiver Clock Interface.
Configure PTP over Ethernet TimeReceiver Clock Interface
The timeReceiver clock interface responds to the upstream PTP timeTransmitter clock.
To configure the PTP timeReceiver clock interface:
After you have configured the PTP over Ethernet timeReceiver clock interface,
enter the commit
command in configuration mode.