Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

DETAILED STEPS

 

Command

Purpose

 

 

 

Step 1

enable

Enables privileged EXEC mode.

 

 

Enter your password if prompted.

 

Example:

 

 

Router> enable

 

 

 

 

Step 2

configure terminal

Enters global configuration mode.

 

Example:

 

 

Router# configure terminal

 

 

 

 

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 master and enters clock port

 

slave} [profile g8265.1]

configuration mode. In master mode, the port exchanges

 

 

timing packets with a PTP slave devices.

 

Example:

The profile keyword configures the clock to use the

 

Router(config-ptp-clk)# clock-port

G.8265.1 recommendations for establishing PTP sessions,

 

Master master profile g8265.1

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

end

Exits clock port configuration mode and enters privileged

 

 

EXEC mode.

 

Example:

 

 

Router(config-ptp-port)# end

 

 

 

 

Verifying Telecom profile

Use the show ptp port running detail command to display the details of PTP masters configured for a Telecom profile slave. The PTSF and Alarm fields indicate the alarm experienced by the SLAVE clock for the MASTER clock.

Router#show ptp port running detail

PORT [slave] CURRENT PTP MASTER PORT

Protocol Address: 208.1.1.3

Clock Identity: 0xE4:D3:F1:FF:FE:FF:BC:E4

 

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

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Cisco Systems A9014CFD manual Verifying Telecom profile, Timing packets with a PTP slave devices, 22-44