TRENDnet TDM-E400 - Manual (Page 86)

TDM-E400 / TDM-C400 ADSL2+ Ethernet Modem Router User’s Manual
86
Configuring ZIPB Mode
The Ethernet Modem Router offers a special type of bridging mode
called ZIPB (Zero Installation PPP Bridge) mode. This mode
enables the ISP to simplify the installation process for customers
who will be using the device as a bridge. ZIPB mode also allows
customers to use the embedded firewall features, which are
normally not available on bridged connections.
Note
Contact your ISP to determine if they offer this connection type
before you configure it.
With ordinary DSL modems that use a bridged connection to the
ISP, the customer must install a program on their PC called a PPP
client. This program enables the customer to log in to the ISP’s
access server and acquire IP information that the computer needs
for all subsequent Internet communication. In ZIPB mode, the
Ethernet Modem Router uses its own PPP software to
communicate at startup with the ISP. The ISP assigns the IP
information to the device’s PPP interface, which then uses its DHCP
server to pass the information on to the user’s PC. Therefore, the
PPP interface and the user’s PC both use the same IP address.
Working with your ISP, follow this procedure to enable ZIPB mode:
1. Ensure that your PCs are configured to accept IP information
assigned by a DHCP server. See “Quick Start Part 2 —
Configuring Your Computers,” for instructions.
2. Ensure that at least one PPPoE or PPPoA interface has
been created on the Ethernet Modem Router. See Chapter 5
for instructions.
The Status field for the PPP interface must be set to Start on
Data. You can modify an existing interface to set this property.
Note
If you have more than one computer on your LAN and your ISP
provides multiple public IP addresses for those computers, you
must establish a PPP interface for each public IP address.
3. If it does not already exist, create a DHCP server pool with
poolid=0.
The pool should include at least one unique private IP address
for each computer on your LAN. The gateway IP address
should be set to the address of the LAN interface, which must
be in the same subnet (see Chapter 4 for instructions).
4. Enable DHCP server, as described in “Setting the DHCP
Mode” on page 101.
5. Click the Services tab to display the NAT Configuration
page. If the NAT feature is enabled, click the Disable radio
button.
6. Click the Bridging tab to display the Bridging page, and then
click the ZIPB: Enable radio button.
7. Click the Bridging: Disable radio button.