HP 5800 series Command Reference Manual page 242

For VPLS, signaling advertisement uses the MTU of the VPLS instance.
The xconnect vsi command is available for service instances with the ID ranging from 1 to 4094.
Syntax
xconnect vsi vsi-name [ access-mode { ethernet | vlan } ]
undo xconnect vsi
View
Service instance view
Default level
2: System level
Parameters
vsi-name: Specifies the name of a VPLS instance, which is a case-insensitive string of 1 to 31 characters.
Hyphens (-) are not allowed.
access-mode: Specifies the access mode of the service instance as Ethernet or VLAN. The default access
mode is VLAN.
ethernet: Specifies the Ethernet access mode.
vlan: Specifies the VLAN access mode.
Examples
# Associate service instance 200 of GigabitEthernet 1/0/2 with VPLS instance vsi200, and specify the
matching external VLAN tag as 200.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/2
[Sysname-GigabitEthernet1/0/2] service-instance 200
[Sysname-GigabitEthernet1/0/2-srv200] encapsulation s-vid 200
[Sysname-GigabitEthernet1/0/2-srv200] xconnect vsi vsi200 hub
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