[edit]
admin@juniper-acx# show interfaces ge-0/1/8
flexible-vlan-tagging;
encapsulation flexible-ethernet-services; unit 100 {
    encapsulation vlan-bridge;
    vlan-id 100;
    family bridge;
}
unit 200 {
    encapsulation vlan-bridge;
    vlan-id 200;
    family bridge;
}

[edit]
admin@juniper-acx# show interfaces ge-0/1/5
flexible-vlan-tagging;
encapsulation flexible-ethernet-services; 
unit 100 {
    encapsulation vlan-bridge;
    vlan-id 100;
    family bridge;
}
unit 200 {
    encapsulation vlan-bridge;
    vlan-id 200;
    family bridge;
}

[edit]
admin@juniper-acx# show bridge-domains
bridge1 {
    domain-type bridge;
    vlan-id 100;
    interface ge-0/1/8.100;
    interface ge-0/1/5.100;
}
bridge2 {
    domain-type bridge;
    vlan-id 200;
    interface ge-0/1/8.200;
    interface ge-0/1/5.200;
}

[edit]
admin@juniper-acx# run show bridge domain

Routing instance        Bridge domain            VLAN ID     Interfaces
default-switch          bridge1                     100
                                                             ge-0/1/8.100
                                                             ge-0/1/5.100
default-switch          bridge2                    200
                                                             ge-0/1/8.200
                                                             ge-0/1/5.200

[edit]
admin@juniper-acx#