Troubleshooting guide

RFC1483 Bridging Implementations

Select one of the following RFC1483 bridging implementations for your Asymmetric Digital Subscriber Line

(ADSL) service.

Integrated Routing and Bridging (IRB): (Recommended) The IRB feature allows your Cisco DSL Router to

bridge traffic in on its ATM interface (the ADSL interface) and then route that traffic out on its Ethernet

interface. With IRB enabled, the Cisco DSL Router can perform value−added services such as Network

Address Translation (NAT) overload, NAT Pool, Static NAT, and Dynamic Host Control Protocol (DHCP)

Server.

Pure Bridging: In a Pure Bridging implementation, your Cisco DSL Router acts as a simple ADSL to

Ethernet bridge, and is unable to provide value−added services.

Main Page

Cisco DSL Router Configuration and Troubleshooting

Guide

PPPoA Online Form

Before you can successfully configure your Cisco Digital Subscriber Line (DSL) Router with Asymmetric

Digital Subscriber Line (ADSL) service, you need specific information from your Internet Service Provider

(ISP). If your ISP is unsure, unable, or unwilling to provide answers to the questions outlined below, you may

not be able to correctly configure your Cisco DSL Router.

Forms are provided to help you obtain and record the information you need to build your own configuration.

Choose one of two formats for each form. Note that each format has different requirements for saving text that

you enter.

HTML – Enter information in the forms on this page.

Important: To save your entries you must print this page. No other methods to save your information

are available at this time.

•

Microsoft Word – Click here to open the forms in Microsoft Word. Fill in the forms, and then save

them on your local drive. Return to this page and continue with Choose Your Next Step at the bottom

of this page.

•

Important: If you need assistance with building or troubleshooting your configuration, you must have the

information in these forms accessible before you contact the Cisco Technical Assistance Center (TAC).

Cisco DSL Router Configuration and Troubleshooting Guide