Cisco ASR 14000 Series Management Command Reference page 458

update-calendar
C i s c o C o n f i d e n t i a l - B e t a R e v i e w R 3 . 7. 1
update-calendar
To update the calendar periodically from Network Time Protocol (NTP), use the update-calendar
command in NTP configuration mode. To remove the update-calendar command from the
configuration file and restore the system to its default condition with respect to the command, use the no
form of this command.
Syntax Description This command has no arguments or keywords.
Defaults
This command is disabled.
Command Modes NTP configuration
Command History Release
Release 3.7.1
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes the proper
task IDs.
Some networking devices have a calendar that is separate from the system clock. This calendar runs
continuously, even if the device is powered off or rebooted.
If a networking device is synchronized to an outside time source through NTP, it is a good idea to update
the calendar with the time learned from NTP. Otherwise, the calendar may gradually lose or gain time.
After you configure the ntp update calendar command, NTP updates the calendar with the system clock
every hour.
Task ID Task ID
ip-services
Examples The following example shows how to configure the system to update the calendar periodically from the
system clock:
RP/0/RP0/CPU0:router(config)# ntp
RP/0/RP0/CPU0:router(config-ntp)# update-calendar
Cisco ASR 14000 Series Router System Management Command Reference
SMR-456
update-calendar
no update-calendar
Modification
This command was introduced on the Cisco ASR 14000 Series Router.
Operations
read, write
NTP Commands on Cisco IOS XR Software
OL-17231-01