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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 22 Configuring Clocking
Configuring PTP for the Cisco ASR 901 Router
8. transport ipv4 unicast interface interface-type interface-number [negotiation]
9. exit
DETAILED STEPS
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
ptp clock boundary domain
domain
Example:
Router(config)# ptp clock boundary
domain 0
Configures the PTP boundary clock and enters clock
configuration mode.
• domain—The PTP clocking domain number. Valid
values are from 0 to 127.
Step 4
clock-port
port-name
slave
Example:
Router(config-ptp-clk)# clock-port
SLAVE slave
Sets the clock port to PTP slave mode and enters the clock
port configuration mode. In slave mode, the port exchanges
timing packets with a PTP master clock.
Step 5
transport ipv4 unicast interface
interface-type
interface-number
[negotiation]
Example:
Router(config-ptp-port)# transport
ipv4 unicast interface Loopback 0
negotiation
Sets port transport parameters.
• interface-type—The type of the interface.
• interface-number—The number of the interface.
• negotiation—(Optional) Enables dynamic discovery
of slave devices and their preferred format for sync
interval and announce interval messages.
Step 6
clock source
source-address
Example:
Router(config-ptp-port)# clock
source 133.133.133.133
Specifies the address of a PTP master clock.
Step 7
clock-port
port-name
master
Example:
Router(config-ptp-port)# clock-port
Master master
Sets the clock port to PTP master mode. In master mode,
the port exchanges timing packets with PTP slave devices.
Note The master clock-port does not establish a clocking
session until the slave clock-port is phase aligned.