Configuring Ptp Dynamic Ports For Ethernet Encapsulation - Juniper ACX1000 Configuration Manual

ACX Series Universal Access Router Configuration Guide

Configuring PTP Dynamic Ports for Ethernet Encapsulation

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For PTP over Ethernet, you can also configure a port to function as both a slave port and
a master port. This type of port is called a dynamic port, a stateful port, or a bidirectional
port. Such a dynamic 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 master and slave roles or interfaces.
To configure PTP over Ethernet with dynamic or bidirectional ports for multicast mode
of transmission, you must include the
ptp stateful interface interface-name]
To enable a node to function as both a master and a slave port in PTP over Ethernet
networks:
Configure the interface on which to respond to downstream PTP slave ports or clients.
1.
[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 [
Configure the upstream multicast PTP dynamic clock source parameters.
2.
[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.
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 master 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 slave clock interface, enter the
command from configuration mode.
multicast-mode statement at the
hierarchy level.
edit interfaces interface-name
Copyright © 2017, Juniper Networks, Inc.
[edit protocols
] hierarchy level.
commit