Juniper ACX1000 Configuration Manual page 1315

Copyright © 2017, Juniper Networks, Inc.
You can configure the following physical interface encapsulations for VPLS routing
instances:
—Use Ethernet VPLS encapsulation on Ethernet interfaces that have
ethernet-vpls
VLAN 802.1Q tagging and VPLS enabled. The PE router expects to receive Ethernet
frames with VLAN tags that are not service-delimiting. The Ethernet frames are not
meaningful to the PE router and cannot be used by the service provider to separate
customer traffic.
On M Series routers (except the M320 router), the 4-port Fast Ethernet TX PIC and
the 1-port, 2-port, and 4-port, 4-slot Gigabit Ethernet PICs can use the Ethernet VPLS
encapsulation type.
ether-vpls-over-atm-llc —For ATM intelligent queuing (IQ) interfaces only, use the
Ethernet virtual private LAN service (VPLS) over ATM LLC encapsulation to bridge
Ethernet interfaces and ATM interfaces over a VPLS routing instance (as described in
RFC 2684, Multiprotocol Encapsulation over ATM Adaptation Layer 5). Packets from
the ATM interfaces are converted to standard ENET2/802.3 encapsulated Ethernet
frames with the frame check sequence (FCS) field removed.
—Use extended virtual LAN (VLAN) VPLS encapsulation on Ethernet
extended-vlan-vpls
interfaces that have VLAN 802.1Q tagging and VPLS enabled and that must accept
packets carrying TPIDs 0x8100, 0x9100, and 0x9901. On M Series routers (except the
M320 router), the 4-port Fast Ethernet TX PIC and the 1-port, 2-port, and 4-port, 4-slot
Gigabit Ethernet PICs can use the Ethernet VPLS encapsulation type.
NOTE: The built-in Gigabit Ethernet PIC on an M7i router does not support
extended VLAN VPLS encapsulation.
—Use VLAN VPLS encapsulation on Ethernet interfaces with VLAN 802.1Q
vlan-vpls
tagging and VPLS enabled. The PE router expects to receive Ethernet frames with
VLAN tags that are service-delimiting. These VLAN tags can be used by the service
provider to separate customer traffic. For example, LAN traffic from different customers
can flow through the same service provider switch, which can then apply VLAN tags
to distinguish one customer's traffic from the others. The traffic can then be forwarded
to the PE router.
Interfaces with VLAN VPLS encapsulation accept packets carrying standard TPID
values only. On M Series routers (except the M320 router), the 4-port Fast Ethernet
TX PIC and the 1-port, 2-port, and 4-port, 4-slot Gigabit Ethernet PICs can use the
Ethernet VPLS encapsulation type.
To configure the encapsulation type for logical interfaces, include the
statement:
encapsulation (ether-vpls-over-atm-llc | vlan-vpls);
You can include the
encapsulation
hierarchy levels:
[edit interfaces interface-name unit number]
Chapter 35: Configuring Virtual Private LAN Service
statement for logical interfaces at the following
encapsulation
1257