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Scheduling a Junos Commit Operation

You can schedule when you want your candidate configuration to become active. To save Junos OS configuration changes and activate the configuration on the router at a future time or upon reboot, use the commit at configuration mode command, specifying reboot or a future time at the [edit] hierarchy level:

[edit]user@host # commit at string

Where string is reboot or the future time to activate the configuration changes. You can specify time in two formats:

  • A time value in the form hh:mm[:ss] hours, minutes, and optionally seconds)—Commit the configuration at the specified time, which must be in the future but before 11:59:59 PM on the day the commit at configuration mode command is issued. Use 24-hour time for the hh value; for example, 04:30:00 is 4:30:00 AM, and 20:00 is 8:00 PM. The time is interpreted with respect to the clock and time zone settings on the router.
  • A date and time value in the form yyyy-mm-dd hh:mm[:ss] (year, month, date, hours, minutes, and, optionally, seconds)—Commit the configuration at the specified day and time, which must be after the commit at command is issued. Use 24-hour time for the hh value. For example, 2003-08-21 12:30:00 is 12:30 PM on August 21, 2003. The time is interpreted with respect to the clock and time zone settings on the router.

Enclose the string value in quotation marks (" "). For example, commit at "18:00:00". For date and time, include both values in the same set of quotation marks. For example, commit at "2005-03-10 14:00:00".

A commit check is performed immediately when you issue the commit at configuration mode command. If the result of the check is successful, then the current user is logged out of configuration mode, and the configuration data is left in a read-only state. No other commit can be performed until the scheduled commit is completed.

Note: If Junos OS fails before the configuration changes become active, all configuration changes are lost.

You cannot enter the commit at configuration command after you issue the request system reboot command.

You cannot enter the request system reboot command once you schedule a commit operation for a specific time in the future.

You cannot commit a configuration when a scheduled commit is pending. For information about how to cancel a scheduled configuration by means of the clear command, see the Junos OS Operational Mode Commands.

Note: We do not recommend performing a commit operation on the backup Routing Engine when graceful Routing Engine switchover is enabled on the router.

 

Related Documentation

 

Published: 2013-01-15

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