Cisco Systems A9014CFD manual 22-42

Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

	Command	Purpose
Step 3	ptp clock ordinary domain domain	Configures the PTP ordinary clock and enters clock
		configuration mode.
	Example:	• domain—The PTP clocking domain number. Valid
	Router(config)# ptp clock ordinary	values are from 4 to 23.
	domain 4
Step 4	clock-port port-name{master	Sets the clock port to PTP slave mode and enters clock port
	slave} [profile g8265.1]	configuration mode. In slave mode, the port exchanges
		timing packets with a PTP master clock.
	Example:	The profile keyword configures the clock to use the
	Router(config-ptp-clk)# clock-port	G.8265.1 recommendations for establishing PTP sessions,
	Slave slave	determining the best master clock, handling SSM, and
		mapping PTP classes.
		Note Using a telecom profile requires that the clock have
		a domain number of 4–23.
Step 5	transport ipv4 unicast interface	Sets port transport parameters.
	interface-type interface-number	• interface-type—The type of the interface.
	Example:	• interface-number—The number of the interface.
	Router(config-ptp-port)# transport
	ipv4 unicast interface loopback 0
Step 6	clock source source-address	Specifies the address of a PTP master clock. You can
	[priority]	specify a priority value as follows:
	Example:	• No priority value—Assigns a priority value of 0, the
		highest priority.
	Router(config-ptp-port)# clock	• 1—Assigns a priority value of 1.
	source 8.8.8.1
		• 2—Assigns a priority value of 2.
Step 7	clock source source-address	Specifies the address of an additional PTP master clock;
	[priority]	repeat this step for each additional master clock. You can
		configure up to four master clocks.
	Example:
	Router(config-ptp-port)# clock
	source 8.8.8.2 1
Step 8	clock source source-address	Specifies the address of an additional PTP master clock;
	[priority]	repeat this step for each additional master clock. You can
		configure up to four master clocks.
	Example:
	Router(config-ptp-port)# clock
	source 8.8.8.3 2

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
22-42	OL-23826-09