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Chapter 9 The VPN Transport Screens
User’s Guide
98
•The Ethernet Pseudowire screen (Section 9.4 on page 104) lets you configure
the links over the WiMAX network between the WiMAX Modem and the service
provider’s router.
•The Statistics screen (Section 9.5 on page 107) 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 Modem’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 WiMAX Modem (D), their source is identified by
examining their VLAN tags.
Figure 34 Identifying Users
A
B
PORT 1
PORT 2
PORT 1 VLAN 1
PORT 2 VLAN 2
1
2
C
D