■ Example
host1#timing source secondary sonet 3/0
■ There is no no version.
■ See timing source.
Monitoring Timing
Use the show timing command to view the timing settings for the system.
show timing
■ Use to display the timing settings and the operational status of the system timing.
■ If a timing source fails, the system uses the next time source in the hierarchy,
and a message appears in the system log at the warning level. If auto-upgrade
is enabled, the system upgrades to a higher-priority timing source when one
becomes available, and a message appears in the system log at the notice level.
■ Example
host1#show timing
timing: tertiary (failover from primary)
primary: external SC E1 (A) (ERROR)
secondary: ds3 3/0 (ERROR)
tertiary: internal SC oscillator (ok)
auto-upgrade enabled
■ See show timing.
Using the CLI
Use the commands described in this section to navigate the CLI. For a complete
description of the CLI, see “Command-Line Interface” on page 29.
configure
■ Use to enter Global Configuration mode.
■ Global Configuration mode provides access to other configuration modes, such
as Interface Configuration mode. See “Command-Line Interface” on page 29.
■ This command allows other commands to be executed from a terminal or a file.
■ This command is not allowed for a short time after a warm restart (warm
switchover) occurs. This delay allows some applications time to complete their
warm-restart initialization. However, if the warm restart is not complete in 5
minutes, the warm start is cancelled and configuration access is restored.
■ Example 1
host1#configure
Configuring from terminal or file [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
Using the CLI ■ 255
Chapter 5: Managing the System
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