CLI Reference Guide-R05

Chapter 4 | System Management Commands
Synchronous Ethernet
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◆ If both an absolute rule and one or more periodic rules are configured for the
same time range (i.e., named entry), that entry will only take effect if the current
time is within the absolute time range and one of the periodic time ranges.
Example
This example configures a time range for the periodic occurrence of an event.
Console(config)#time-range sales
Console(config-time-range)#periodic daily 1 1 to 2 1
Console(config-time-range)#
show time-range This command shows configured time ranges.
Syntax
show time-range [name]
name - Name of the time range. (Range: 1-16 characters)
Default Setting
None
Command Mode
Privileged Exec
Example
Console#show time-range r&d
Time-range r&d:
absolute start 01:01 01 April 2009
periodic Daily 01:01 to Daily 02:01
periodic Daily 02:01 to Daily 03:01
Console#
Synchronous Ethernet
Synchronous Ethernet (SyncE) is used to synchronize specified links to the same
frequency in order to transfer timing information to remote sites. SyncE ensures
that all nodes have a clock source traceable to a Primary Reference Clock (PRC). The
commands described in this section are used to enable SyncE on specified
interfaces, automatically or manually select a clock source, receive Synchronization
Status Messages (SSM) used to select the clock source based on the indicated
quality level.