The physical link-layer encapsulation type for VPLS interface
can be one of the following:
ethernet-vpls—Use Ethernet VPLS encapsulation
on Ethernet interfaces that have VPLS enabled and that must accept
packets carrying standard Tag Protocol Identifier (TPID) values.
extended-vlan-vpls—Use extended virtual
LAN (VLAN) VPLS encapsulation on Ethernet interfaces that have VLAN
802.1Q tagging and VPLS enabled and that must accept packets carrying
TPIDs 0x8100, 0x9100, and 0x9901. All VLAN IDs from 1 through 1023
are valid for VPLS VLANs on Fast Ethernet interfaces, and all VLAN
IDs from 1 through 4094 are valid for VPLS VLANs on Gigabit Ethernet
interfaces.
vlan-vpls—Use VLAN VPLS encapsulation on
Ethernet interfaces with VLAN tagging and VPLS enabled. Interfaces
with VLAN VPLS encapsulation accept packets carrying standard TPID
values only. You must configure this encapsulation type on both the
physical interface and the logical interface. VLAN IDs 1 through 511
are reserved for normal Ethernet VLANs, IDs 512 through 1023 are reserved
for VPLS VLANs on Fast Ethernet interfaces, and IDs 512 through 4094
are reserved for VPLS VLANs on Gigabit Ethernet interfaces.
