Juniper ACX1000 Configuration Manual page 340

ACX Series Universal Access Router Configuration Guide
Requirements
Overview
Configuration
CLI Quick
Configuration
282
Configuration on page 282
Verifying the PTP over Ethernet Multicast Dynamic, Master, and Slave
Settings on page 286
This example uses the following hardware and software components:
An ACX Series router
Junos OS Release 12.3X51 or later
While an ACX Series router supports the PTP over Ethernet functionality, a Brilliant Grand
Master such as an MX Series router or a TCA Series Timing Client does not support PTP
over Ethernet. Consider a sample deployment in which an ACX Series router named ACX1
functions as a boundary clock with a PTP slave port using IPv4 as the encapsulation
mode and master ports using Ethernet as the encapsulation mode for PTP traffic. ACX1
contains two potential slave interfaces, one that is fixed as a slave-only port using IPv4
on the link toward an MX Series router named MX2, and a dynamic port that functions
as a slave using PTP over Ethernet on the link toward another ACX Series router named
ACX2. In addition, ACX1 also contains a port that is a master-only port using PTP over
Ethernet and connects to the base station.
In this example, the router uses either interface ge-0/2/0.0 or ge-0/2/1.0 as the selected
slave interface based on the announce messages received from the master and the port
that was selected using the Best Master Clock Algorithm (BMCA). The interface ge-0/1/4.0
is always in the master state. According to the IEEE 1588 specification, if port ge-0/2/0.0
is selected as the slave interface, interface ge-0/2/1.0 transitions to the master state. If
interface ge-0/2/1.0is selected as the slave port, interface ge-0/2/0.0 transitions to the
listening state. You can also configure the interface ge-0/1/4.0 as a slave only interface
for PTP over Ethernet, if necessary, for completeness of the configuration.
In this example, you configure a master port, a slave port, and a dynamic port for PTP
over Ethernet and PTP over IPv4 encapsulation. You can also configure unicast and
multicast modes of transmission of PTP traffic among the master and slave nodes.
Configuring PTP over Ethernet for Multicast Master, Slave, and Dynamic
Ports on page 283
Results on page 285
To quickly configure this example, copy the following commands, paste them in a text
file, remove any line breaks, change any details necessary to match your network
configuration, and then copy and paste the commands into the CLI at the [
level:
set interfaces ge-0/1/4 description "to base-station"
set interfaces ge-0/1/4 unit 0 family inet address 7.1.1.37/24
] hierarchy
edit
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