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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
Configuring a Hybrid Boundary Clock
Complete the following steps to configure a hybrid clocking in PTP boundary clock mode.
Prerequisites
When configuring a hybrid clock, ensure that the frequency and phase sources are traceable to the same
master clock.
Restrictions
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 boundary domain domain [hybrid]
4. clock-port port-name slave
5. transport ipv4 unicast interface interface-type interface-number [negotiation]
6. clock source source-address
7. clock-port port-name master
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
hybrid
Example:
Router(config)# ptp clock boundary
domain 0 hybrid
Configures the PTP boundary clock and enters clock
configuration mode.
• domain—The PTP clocking domain number. Valid
values are from 0 to 127.
• hybrid—(Optional) Enables the PTP boundary clock
to work in hybrid mode. Enables the hybrid clock such
that the output of the clock is transmitted to the remote
slaves.