Hi,
Thank for you answer.
I tested in demo lab on QFX3500, all work.
Example:
root@QFX3500> show configuration interfaces ge-0/0/38 | display set set interfaces ge-0/0/38 description -=EX3200=- set interfaces ge-0/0/38 flexible-vlan-tagging set interfaces ge-0/0/38 encapsulation extended-vlan-bridge set interfaces ge-0/0/38 unit 3205 vlan-id-list 3205 set interfaces ge-0/0/38 unit 3205 input-vlan-map push set interfaces ge-0/0/38 unit 3205 input-vlan-map vlan-id 5 set interfaces ge-0/0/38 unit 3205 output-vlan-map pop set interfaces ge-0/0/38 unit 3210 vlan-id-list 3210 set interfaces ge-0/0/38 unit 3210 input-vlan-map push set interfaces ge-0/0/38 unit 3210 input-vlan-map vlan-id 10 set interfaces ge-0/0/38 unit 3210 output-vlan-map pop root@QFX3500> show configuration interfaces ge-0/0/40 | display set set interfaces ge-0/0/40 description -=MX=- set interfaces ge-0/0/40 flexible-vlan-tagging set interfaces ge-0/0/40 encapsulation extended-vlan-bridge set interfaces ge-0/0/40 unit 3205 vlan-id 5 set interfaces ge-0/0/40 unit 3210 vlan-id 10 root@QFX3500> show configuration vlans | display set set vlans Customer_L2VPN interface ge-0/0/38.3210 set vlans Customer_L2VPN interface ge-0/0/40.3210 set vlans DHCP_Subscribers_1 interface ge-0/0/38.3205 set vlans DHCP_Subscribers_1 interface ge-0/0/40.3205