it’s probably copied from some Serious Business network OS I wouldn't know who came first, but it's a feature of JunOS (Juniper) as well: every config apply fi

it’s probably copied from some Serious Business network OS I wouldn't know who came first, but it's a feature of JunOS (Juniper) as well: every config apply first applies the config, then waits for confirmation on the terminal where it was ran. If confirmation isn't given within X seconds, it reverts the config change.