Reload in cisco at or in

Reload in cisco could be useful for testing when we enter a command and we are testing and to fix an issue.

Today we will see how to to schedule a reload

The reload command permits to schedule a reboot system; for instance, to plan a night router restart or during a critical configuration (AAA, vty, and so on…).
There are two ways to schedule a reload system:

• at: at a specific time/date
• in: after a time interval

The ‘at’ keyword permits to schedule a reload of the software to take place at the specified time (using a 24-hour clock). If you specify the month and day, the reload is scheduled to take place at the specified time and date.
The following example reloads the router on April 30 at 3:00 a.m.:

Cisco#reload at 03:00 30 apr
Reload scheduled for 03:00:00 UTC Sat Apr 30 2011 (in 42 hours and 10 minutes) by console
Reload reason: Reload Command
Proceed with reload? [confirm]
Cisco#

Cisco#show reload
Reload scheduled for 03:00:00 UTC Sat Apr 30 2011 (in 42 hours and 10 minutes) by console
Reload reason: Reload Command
Cisco#

The ‘in’ keyword permits to schedule a reload of the software to take effect in the specified minutes or hours and minutes.
The followind example reloads the router in 90 minutes:

Cisco#reload in 1:30
Reload scheduled for 10:20:49 UTC Thu Apr 28 2011 (in 1 hour and 30 minutes) by console
Reload reason: Reload Command
Proceed with reload? [confirm]
Cisco#

regards