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https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/encapsulation-edit-interfaces-physical.html

extended-vlan-

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bridge (  Physical Interface Options )

—Use extended VLAN bridge encapsulation on Ethernet interfaces that have IEEE 802.1Q VLAN tagging and bridging enabled and that must accept packets carrying TPID 0x8100 or a user-defined TPID.

Default Value:
ge-0/0/12
  Link-level type: Ethernet,                 other option are:  Flexible-Ethernet, Extended-VLAN-Bridge, ....

ge-0/0/12.0
    Flags: Up SNMP-Traps 0x4000 VLAN-Tag [ 0x8100.200 ]  Encapsulation: ENET2

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