Select the desired port as the VPN Up-link port. It’s required to set the port connected to the
operators’ backbone networks to be up-link port.

6.3.2 Port Enable

On this page, you can enable the port for the VLAN VPN function. Only the port is enabled, can
the configured VLAN VPN function take effect.
Figure 6-11 Enable VLAN VPN for Port
Select your desired port for VLAN VPN function. All the ports are disabled for VLAN VPN function
by default.

Configuration Procedure of VLAN VPN Function:

Step Operation Description
1 Enable VPN mode. Required. On the VLAN→VLAN VPN→VPN Config page,
enable the VPN mode.
2 Configure the global TPID. Optional. On the VLAN→VLAN VPN→VPN Config page,
configure the global TPID basing on the devices connected
to the up-link port.
3 Set the VPN up-link port. Required. On the VLAN→VLAN VPN→VPN Config page,
specify the desired port to be the VPN up-link port. It’s
required to set the port connected to the backbone
networks to be up-link port.
4 Create SP (Service
Provider) VLAN.
Optional. On the VLAN→802.1Q VLAN page, create the
SP VLAN. For the steps of creating VLAN, please refer to
802.1Q VLAN.
6.4 GVRP
GVRP (GARP VLAN Registration Protocol) is an implementation of GARP (generic attribute
registration protocol). GVRP allows the switch to automatically add or remove the VLANs via the
dynamic VLAN registration information and propagate the local VLAN registration information to
other switches, without having to individually configure each VLAN.
GARP
GARP provides the mechanism to assist the switch members in LAN to deliver, propagate and
register the information among the members. GARP itself does not work as the entity among the
devices. The application complied with GARP is called GARP implementation, and GVRP is the
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