When configuring a router remotely, it's possible that if you make a mistake, you might accidentally get locked out of the router. If you're next to the router, you could just reboot it, but what if you're nowhere near it?
One trick to prevent being locked out is to tell the router to reboot in a certain amount of time BEFORE you start making changes. For example, the following command reboots the router in 10 minutes and logs the reason as maintenance:
reload 10 maintenance
After making your changes, if everything is working correctly, remember to cancel the reload so that the router doesn't actually reboot: