Other Editing Commands; Forcing A Specific Reference - Alcatel-Lucent 7450 Basic System Configuration Manual

System Timing
If the current reference goes offline or becomes unstable the revert command allows the clock
to revert to a higher-priority reference.
When revertive switching enabled a valid timing reference of the highest priority is used. If
a reference with a higher priority becomes valid, a reference switch over to that reference is
initiated. If a failure on the current reference occurs, the next highest reference takes over.
If non-revertive switching is enabled, the valid active reference always remains selected even
if a higher priority reference becomes available. If the active reference becomes invalid, a
reference switch over to a valid reference with the highest priority is initiated. The failed
reference is eligible for selection once it becomes operational.
CLI Syntax:

Other Editing Commands

Other editing commands include:
CLI Syntax:

Forcing a Specific Reference

The debug sync-if-timing force-reference command should only be used to test and debug
problems. Network synchronization problems may appear if network elements are left with
this manual override setting. Once the system timing reference input has been forced, it may
be cleared using the no force-reference command.
You can force the CPM clock to use a specific input reference using the force-reference
command.
320
revert
config>system>sync-if-timing
no revert
• commit — This command saves changes made to the timing references during a
session. Modifications are not persistent across system boots unless this command is
entered.
• abort — This command discards changes that have been made to the timing
references during a session.
config>system>sync-if-timing
abort
commit
Basic System Configuration Guide