3Com 8807 Command Reference Manual page 1072

1070 C 65: Q Q C
HAPTER IN
c
C
ONFIGURATION OMMANDS
Description
Use the vlan-vpn uplink enable command to set a port to be a VLAN-VPN uplink
port.
Use the undo vlan-vpn uplink command to remove the configuration.
When sending a packet, a VLAN-VPN uplink port replaces the TPID value in the
outer VLAN tag with the configured TPID value. You can use the vlan-vpn tpid
command to set the TPID value used by the VLAN-VPN uplink port.
CAUTION:
At present, 3C17512 and LSBM1TGX1 cards do not support this command.
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The vlan-vpn uplink enable command and the vlan-vpn enable command
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are mutually exclusive. That is, if you execute the vlan-vpn enable command
on a port, you will fail to execute the vlan-vpn uplink enable command on
the same port; if you execute the vlan-vpn uplink enable command on a
port, you will fail to execute the vlan-vpn enable command on the same port
either.
Example
# Set Ethernet3/1/1 port to be a VLAN-VPN uplink port.
[3Com-Ethernet3/1/1] vlan-vpn uplink enable
# Restore Ethernet3/1/1 port to a common port.
[3Com-Ethernet3/1/1] undo vlan-vpn uplink
VLAN-VPN uplink status: enabled