redundant-trunk-group or RTG



Link

a redundant trunk link provides a simple solution for network recovery when a trunk port on a switch goes down
Configuration
primary RTG

set ethernet-switching-options redundant-trunk-group group name interface <interface-name1> primary

set ethernet-switching-options redundant-trunk-group group name interface <interface-name2>

set protocols rstp disable





recovery Secondary back to primary timer

preempt-cutover-timer

Link

Operation

show redundant-trunk-group