The sequence is a powerful lab-only technique to instantly bring up a Juniper interface by:

user@router# set interfaces ge-0/0/1-temp ether-options 802.3ad periodic fast user@router# set protocols lacp interface ge-0/0/1-temp periodic fast user@router# set protocols rstp interface ge-0/0/1-temp edge user@router# set interfaces ge-0/0/1-temp disable-hold-time