Example: Configuring Ptp Over Ethernet For Multicast Master, Slave, And Dynamic Ports - Juniper ACX1000 Configuration Manual

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Example: Configuring PTP over Ethernet for Multicast Master, Slave, and Dynamic
Ports
Copyright © 2017, Juniper Networks, Inc.
PTP over Ethernet on ACX Series Routers Overview on page 238
Guidelines for Configuring PTP over Ethernet on page 240
Configuring PTP Multicast Master and Slave Ports for Ethernet Encapsulation on
page 274
Example: Configuring PTP over Ethernet for Multicast Master, Slave, and Dynamic
Ports on page 281
In PTP over Ethernet networks, the master sends the announce, synchronization, and
delay-response packets using the multicast method. If any unicast delay-request message
is received, the master disregards the message and does not send delay-response
messages to the slave. A PTP slave receives the multicast announce packets from the
master or multiple masters and determines the best master using Best Master Clock
Algorithm (BMCA). A slave receives and processes the synchronization from the selected
master clock. The slave sends delay-request messages to this master using the multicast
method and processes the delay-response messages from the master to establish
synchronization.
Both the link-local MAC address and the standard 802.3 multicast MAC address can be
present in a system. However, a PTP interface supports only one of the following at a
point in time:
Layer 2 multicast with link-local MAC address
Layer 2 multicast with standard multicast MAC address
PTP over IPv4
When you configure both IPv4 and Ethernet encapsulation, the unicast-negotiation
configuration applies only to IPv4 encapsulation. It is not effective for PTP over Ethernet
operation.
When you configure a logical interface by using the
hierarchy level, each interface that you configure as a stateful or dynamic
protocols ptp]
port is considered to be both a master and a slave port. Although an ACX Series router
supports up to 32 master ports and 4 slave ports, you can configure only 4 unique logical
interfaces as potential PTP masters by using the
is treated as both a slave and a master interface. You cannot configure the interface that
you specify to be a stateful or dynamic port with the
This example shows how to configure a master port, slave port, and a dynamic port for
PTP over Ethernet and PTP over IPv4 encapsulation, and how to configure unicast and
multicast mode of transmission of PTP traffic among the master and slave nodes.
Requirements on page 282
Overview on page 282
Chapter 9: Configuring Timing and Synchronization
statement at the
stateful
stateful statement because the interface
or statements.
master slave
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281