ZyXEL Communications MAX-306, User Manual, Page: 114 / 405

Chapter 9 The VPN Transport Screens
User’s Guide
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9.1.1 What You Can Do in This Chapter
• The General screen ( Section 9.2 on page 116 ) lets you turn VPN transport on
or off, and to set the VPN transport endpoint (your service provider’s router).
• The Customer Interface screen ( Section 9.3 on page 116 ) lets you specify
which users can use which WiMAX network links.
• The Ethernet Pseudowire screen ( Section 9.4 on page 121 ) lets you configure
the links over the WiMAX network between the WiMAX Device and the service
provider’s router.
• The Statistics screen ( Section 9.5 on page 124 ) lets you view performance
information about the VPN transport connections.
9.1.2 What You Need to Know
The following terms and concepts may help as you read through this chapter.
Identifying Users
For the WiMAX 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.