ZyXEL Communications MAX-200HW2, Руководство пользователя

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Chapter 11 VPN Transport
MAX-200HW2 Series User ’ s Guide
138
11.1.1 What You Can Do in the VPN Transport Screens
• Use the Network > VPN Transport > General screen (see Section 11.2 on page 140 ) to
turn VPN transport on or off, and to set the VPN transport endpoint (your service
provider ’ s router).
• Use the Network > VPN Transport > Customer Interface screen (see Section 11.3 on
page 141 ) to specify which users can use which WiMAX network links.
• Use the
Network
>
VPN Transport
>
Ethernet Pseudowire
screen (see Section 11.5 on
page 143 ) to configure the links over the WiMAX network between the ZyXEL Device
and the service provider ’ s router.
• Use the
Network
>
VPN Transport
>
Statistics
screen (see Section 11.7 on page 145 ) to
view performance information about the VPN transport connections.
11.1.2 What You Need to Know about VPN Transport
Identifying Users
For the ZyXEL Device ’ s VPN Transport feature to work, it must be able to identify users on
the LAN. It does this by examining VLAN (Virtual Local Area Network) tags.
These tags must be added to the data packets by a switch on the LAN. In the following
example, two users ( A and B ) are connected to a switch ( C ). A and B are connected to
different ports on the switch (port 1 and port 2). A and B send untagged packets to the switch.
The switch adds tags to packets depending on the physical port on which they arrive. Packets
arriving on port 1 are given a VLAN ID (VLAN IDentifier) of 1, and packets arriving on port
2 are given a VLAN ID of 2. When the packets reach the ZyXEL Device (
D
), their source is
identified by examining their VLAN tags.
Figure 89 Identifying Users
A
B
PORT 1
PORT 2
PORT 1 VLAN 1
PORT 2 VLAN 2
1
2
C
D