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Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
OL-16506-17
Chapter 11 Network Synchronization Support
Configuring Network Synchronization
• network-clock wait-to-restore command
Use the network-clock wait-to-restore timer global command to set the wait-to-restore time. You
can configure the wait-to-restore time to any value between 0 to 86400 seconds. The default value
is 300 seconds. The wait-to-restore timer can be set in the global configuration mode and the
interface configuration mode.
The following example shows how to configure the wait-to-restore timer in the global configuration
mode:
Router(config)# network-clock wait-to-restore 10 global
The following example shows how to configure the wait-to-restore timer in the interface
configuration mode:
Router(config)# interface gigabitethernet 0/2/0
Router(config-if)# network-clock wait-to-restore 10
• network-clock hold-off command
Use the network-clock hold-off timer global command to configure hold-off time. You can
configure the hold-off time to either 0 or any value between 50 to 10000 ms. The default value is
300 ms. The network-clock hold-off timer can be set in the global configuration mode and the
interface configuration mode.
The following example shows how to configure the hold-off timer:
Router(config-if)# network-clock hold-off 50 global
• network-clock switch force command
Use the network-clock switch force command to forcefully select a synchronization source
irrespective of whether the source is available, and within range.
The following example shows how to configure a force switch:
Router# network-clock switch force interface gigabitethernet 0/2/0
• network-clock switch manual command
Use the network-clock switch manual command to manually select a synchronization source,
provided the clock source has a higher quality level than the currently active clock.
The following example shows how to configure a manual switch:
Router# network-clock switch manual interface gigabitethernet 0/2/0
• network-clock clear switch controller-id command
Use the network-clock clear switch controller-id command to clear the manual, or switch it on by
force.
The following example shows how to clear a switch:
Router# network-clock clear switch t0
• network-clock set lockout command
Use the network-clock set lockout command to lockout a clock source. A clock source flagged as
lockout is not selected for SyncE. To clear the lock-out on a source, use the network-clock clear
lockout command.
The following example shows how to lock out a clock source:
Router# network-clock set lockout interface gigabitethernet 0/2/0