Users Guide

Example: Configure boundary clock with IPv4 unicast transport
method and L3 VLAN
Ensure that the interface connected to the grandmaster clock is configured as a slave device with a list of master clock IP
addresses. Configure the other interface as a master clock with a list of slave device IP addresses. Both the interfaces are only
reachable through the L3 VLAN.
In this example:
● Interface 1 that is part of VLAN 100 is connected to the grandmaster clock.
● The grandmaster clock is reachable only through VLAN 100.
● Interface 2 that is part of VLAN 200 is connected to the slave device.
● The slave device is reachable only through VLAN 200.
Use unicast transport mode when you have clearly defined the role of each node in your deployment. To configure a boundary
clock with two PTP interfaces using IPv4 unicast transport method:
1. Configure the PTP boundary clock.
The delay mechanism of the boundary clock is end-to-end by default.
OS10(config)# ptp clock boundary
2. Enable PTP on interface 1 with IPv4 unicast transport mode.
● The interface is a trunk port.
● A source address is configured for unicast transport from the slave device to the master clock device.
● The unicast IP traffic flows through the PTP-enabled interface and reaches the destination. The system applies hardware
time stamps on PTP packets.
OS10(config)# interface vlan 100
OS10(conf-if-vl-100)# ip address 10.10.10.1/24
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# switchport mode trunk
OS10(conf-if-eth1/1/1)# switchport trunk allowed vlan 100
OS10(conf-if-eth1/1/1)# ptp vlan 100
OS10(conf-if-eth1/1/1)# ptp transport ipv4 unicast slave
OS10(conf-ethernet1/1/1-ptp-ipv4-slave)# source 10.10.10.1
OS10(conf-ethernet1/1/1-ptp-ipv4-slave)# master 10.10.10.2
OS10(conf-if-eth1/1/1)# ptp enable
3. Enable PTP on interface 2 with IPv4 unicast transport mode.
● The interface is an access port.
● Configure a source IP address for unicast transport from the master device to the slave device.
System management
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