User can configure the LAG hash mapping field according to the requirement.

Configure one LAG with three ports.

set interface gigabit-ethernet ge-1/1/1 ether-options 802.3ad ae10
set interface gigabit-ethernet ge-1/1/2 ether-options 802.3ad ae10
set interface gigabit-ethernet ge-1/1/3 ether-options 802.3ad ae10

Configure the LAG hash mapping mode as ethernet-destination-only.

set interface aggregate-ethernet ae10 hash-mapping mode ethernet-destination-only

Configure the LAG hash mapping field. 

set interface aggregate-balancing hash-mapping field ethernet-destination-address disable false
set interface aggregate-balancing hash-mapping field ethernet-source-address disable false