Users Guide

Table Of Contents
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.
The unicast IP traffic flows through PTP-enabled interface, interface 2. The system applies hardware time stamps on
PTP packets.
OS10(config)# interface vlan 200
OS10(conf-if-vl-200)# ip address 20.20.20.1/24
OS10(config)# interface ethernet 1/1/2
OS10(conf-if-eth1/1/2)# switchport access vlan 200
OS10(conf-if-eth1/1/2)# ptp transport ipv4 unicast master
OS10(conf-ethernet1/1/2-ptp-ipv4-master)# source 20.20.20.1
OS10(conf-ethernet1/1/2-ptp-ipv4-master)# slave 20.20.20.2
OS10(conf-if-eth1/1/2)# ptp enable
Interface 1 becomes the slave device and interface 2 becomes the master clock for other devices.
Example: Configure PTP in a multinode setup
The following example describes how to configure PTP in a multinode setup.
Ensure that you configure VLT multicast routing. In this topology:
CR1, CR2, AG1, AG2, AG3, and AG4 are multicast routers.
CR1 and CR2 are the BSR and RP nodes.
TR1 and TR2 are IGMP-enabled L2 nodes.
OSPFv2 is the unicast routing protocol.
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System management