4200 config

set chassis aggregated-devices ethernet device-count 2

set interfaces ae0 aggregated-ether-options link-protection
set interfaces ae0 aggregated-ether-options minimum-links 1
set interfaces ae0 aggregated-ether-options link-speed 100m
set interfaces ae0 aggregated-ether-options lacp passive
set interfaces ae0 aggregated-ether-options lacp periodic fast
set interfaces ae0 unit 0 family ethernet-switching port-mode trunk
set interfaces ae0 unit 0 family ethernet-switching vlan members all


set interfaces ge-0/1/0 ether-options speed 100m
set interfaces ge-0/1/0 ether-options 802.3ad ae0
set interfaces ge-0/1/0 ether-options 802.3ad primary
set interfaces ge-2/1/0 ether-options speed 100m
set interfaces ge-2/1/0 ether-options 802.3ad ae0
set interfaces ge-2/1/0 ether-options 802.3ad backup

3200 config

set chassis aggregated-devices ethernet device-count 2
set interfaces ae0 aggregated-ether-options link-protection
set interfaces ae0 aggregated-ether-options minimum-links 1
set interfaces ae0 aggregated-ether-options link-speed 100m
set interfaces ae0 aggregated-ether-options lacp active
set interfaces ae0 aggregated-ether-options lacp periodic fast
set interfaces ae0 unit 0 family ethernet-switching port-mode trunk
set interfaces ae0 unit 0 family ethernet-switching vlan members all


set interfaces ge-0/1/0 ether-options speed 100m
set interfaces ge-0/1/0 ether-options 802.3ad ae0
set interfaces ge-0/1/0 ether-options 802.3ad primary
set interfaces ge-0/1/1 ether-options speed 100m
set interfaces ge-0/1/1 ether-options 802.3ad ae0
set interfaces ge-0/1/1 ether-options 802.3ad backup