Reference Guide

1482 | System Time and Date
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clock update-calendar
c e s
Set the switch hardware clock based on the software clock.
Syntax
clock
update-calendar
Defaults
Not configured.
Command Modes
EXEC Privilege
Command
History
Usage
Information
Use this command only if you are sure that the hardware clock is inaccurate and the
software clock is correct. You cannot delete this command (that is, there is not a “no”
form of this command).
Related
Commands
debug ntp
c e s
Display Network Time Protocol (NTP) transactions and protocol messages for
troubleshooting.
Syntax
debug
ntp {adjust | all | authentication | events | loopfilter | packets | select | sync}
To disable debugging of NTP transactions, use the
no debug ntp {adjust | all |
authentication | events | loopfilter | packets | select | sync} command.
Parameters
Command Modes
EXEC Privilege
Version 7.6.1.0 Support added for S-Series
Version 7.5.1.0 Support added for C-Series
pre-Version 6.1.1.0 Introduced for E-Series
calendar set Set the hardware clock.
adjust
Enter the keyword adjust to display information on NTP clock adjustments.
all
Enter the keyword all to display information on all NTP transactions.
authentication
Enter the keyword authentication to display information on NTP
authentication transactions.
events
Enter the keyword events to display information on NTP events.
loopfilter
Enter the keyword loopfilter to display information on NTP local clock
frequency.
packets
Enter the keyword packets to display information on NTP packets.
select
Enter the keyword select to display information on the NTP clock selection.
sync
Enter the keyword sync to display information on the NTP clock
synchronization.