Cisco Systems A9014CFD manual PTP Hybrid Clock, Configuring a Hybrid Ordinary Clock, 22-34

Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

PTP Hybrid Clock

To improve the clock quality, you can either improve the oscillator class or reduce the number of hops between the master and the slave. In PTP hybrid mode, the oscillator class is improved by using a physical layer clock (sourced from a stratum-1 clock) instead of the available internal oscillator. The PTP hybrid mode is supported for ordinary clock (in slave mode only) and boundary clock.

Configuring a Hybrid Ordinary Clock

Complete the following steps to configure a hybrid clocking in ordinary slave clock mode:

Prerequisites

When configuring a hybrid clock, ensure that the frequency and phase sources are traceable to the same master clock.

Restrictions

•Hybrid mode is not supported when PTP ordinary clock is in the master mode.

•Hybrid clock is not supported with ToP as network-clock. It needs a valid physical clock source, for example, Sync-E/BITS/10M/TDM.

SUMMARY STEPS

1.enable

2.configure terminal

3.ptp clock ordinary domain domain [hybrid]

4.clock-port port-nameslave

5.transport ipv4 unicast interface interface-typeinterface-number

6.clock source source-address

7.announce timeout value

8.delay-req interval interval

9.sync interval interval

10.end

	Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
22-34	OL-23826-09