Bridge Mode in a ADSL Modem

The bridge mode is a special configuration of a modem-router in which its routing part disabled, leaving the modem-router act as if it were a simple modem.

Bridge Mode Features

In bridge mode, the modem simply acts as a gateway and the data transfer with Internet is processed directly by the computer. That is, the routing function is disabled and the device does not do NAT (Network Address Translation).

In bridge mode, you do not have to manage (open ports) because everything “passes” without restrictions. For this reason, it is always recommended that when the router is in this mode of operation, a firewall is installed on the computer.

Advantages of bridge mode

1. Do not open ports, all programs work correctly, p2p with high ID, everything works.
2. Once the router is configured in this mode, it is no longer necessary to touch its configuration anymore.

Bridge Mode Disadvantages

1. You can only access the Internet to a single computer directly. Logical because we have disabled NAT.
2. You may need to use a dialer program to get access to the Internet.

Modem settings in bridge mode

To configure a modem/router in BRIDGE mode, do the following:Enter into the settings:

Enter into the settings:
In the browser: or
Password: admin
Pass: xxxxxxxx (the one assigned by the respective operator)

Then go to the Network tab, click on WAN Connection, you will see a few options, where it says: “Type: Route”, change the Route by the Bridge option, now where it says New VPI / VCI, 33 and Encapsulation Type: LLC. Click on ‘create’ and ready, the modem is in Bridge mode.