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User Guide 240
Configuring VLAN-VPN (Only for Certain Devices) Configuration Examples
4
Configuration Examples
4.1 Example for Basic VLAN VPN
4.1.1 Network Requirements
A company has two stations, and the computers belong to VLAN 100 and VLAN 200
respectively. The ISP VLAN is VLAN 1050 and the TPID adopted by the ISP network is
0x9100.
The two stations need to communicate with each other through the ISP network. And it is
required that the traffic from VLAN 100 and VLAN 200 should be transmitted in VLAN 1050.
Figure 4-1 Network Topology
4.1.2 Configuration Scheme
To meet the requirement that all the traffic from VLAN 100 and VLAN 200 should be
transmitted through VLAN 1050, users can configure basic VLAN VPN on Switch 1 and
Switch 2 to allow packets sent with double VLAN tags, and thus ensure the communication
between them. The general configuration procedure is as follows:
Here we only introduce the configuration schemes on switch 1 and switch 3, for the
configurations on switch 2 are the same as those on switch 1, and the configurations on
switch 4 are the same as those on switch 3.
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