Asymmetric Digital Subscriber Line (ADSL)

Document ID: 12970

Contents

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Configure
      Network Diagram
      Configuration
Verify
Troubleshoot
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Related Information

Introduction

The Cisco 1700, 2600, and 3600 series routers support the asymmetric digital subscriber line (ADSL) WAN Interface Card (WIC). All three platforms are configured essentially the same, but there are differences in hardware and in the Cisco IOS® Software release required for each one. Throughout this document, the Cisco 1700/2600/3600 is referred to as the Cisco ADSL WIC.

This document shows a Cisco ADSL WIC that is connected to a Cisco 6130 DSL access multiplexer (DSLAM) and terminates on a Cisco 6400 Universal Access Concentrator (UAC). The Cisco ADSL WIC is configured with PPP over ATM (PPPoA).

The Internet Service Provider (ISP) has given the subscriber a range of IP addresses, 10.0.0.1 to 10.255.255.254 with a mask of 255.0.0.0. IP address 10.0.0.1 is manually configured on the Ethernet interface of the Cisco ADSL WIC. The subscriber manually configures the balance of IP addresses on the local LAN devices. Each local device should be configured with a default gateway IP address of 10.0.0.1—the IP address of the Cisco ADSL WIC Ethernet interface.

Prerequisites

Requirements

This configuration was developed and tested with the help of the software versions mentioned here. Before you attempt this configuration, ensure that you use one of these prerequisite software releases:

• Cisco 6400 UAC-NRP IOS Software Release 12.1(3)DC1

• Cisco 6400 UAC-NSP IOS Software Release 12.1(3)DB

• Cisco 6130 DSLAM-NI2 IOS Software Release 12.1(5)DA

Components Used

The information in this document is based on the software and hardware versions below.

To support the ADSL WIC on the Cisco 2600 or 3600, these hardware products are required:

• 2600: Chassis WIC slots, NM-2W

• 3600: NM-1FE1R2W, NM-1FE2W, NM-2FE2W, NM-2W

Note: For the Cisco 3600, ADSL is not supported on WIC NM-1E1R2W, NM-1E2W, or NM-2E2W.

To support the ADSL WIC, these minimum Cisco IOS Software releases are required:

• Cisco IOS Software Release 12.1(5)YB (Plus versions only) on the Cisco 2600 or 3600

• Cisco IOS Software Release IOS 12.1(3)XJ or later (Plus versions or ADSL feature set only) on the Cisco 1700. The ADSL feature set is identified by "y7" in the image name; for example, c1700-sy7-mz.121-3.XJ.bin.

Note: When you download the image for the Cisco 1700, make sure you select the image name of 1700. Do not download a 1720 or a 1750 image; the features will not support the ADSL WIC.

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

Conventions

For more information on document conventions, see the Cisco Technical Tips Conventions.

Configure

In this section, you are presented with the information to configure the features described in this document.

Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .

Network Diagram

This document uses the network setup shown in the diagram below.

Configuration

This document uses the configuration shown below.

! 
version 12.1
service timestamps debug datetime msec 
service timestamps datetime msec 
! 
hostname R1 
! 
ip subnet-zero 
! 
interface FastEthernet0 
 ip address 10.0.0.1 255.0.0.0 
 no ip directed-broadcast 
 no ip mroute-cache
! 
interface ATM0 
 no ip address
 no ip directed-broadcast 
 no ip mroute-cache 
 no atm ilmi-keepalive
 pvc 1/150 
  encapsulation aal5mux ppp dialer 
  dialer pool-member 1 
 !
 hold-queue 224 in 
! 
! 
interface Dialer0 
 ip unnumbered Ethernet0 
 no ip directed-broadcast 
 encapsulation ppp 
 dialer pool 1 
 dialer-group 1 
 ppp pap sent-username username password password

! 
ip classless 
ip route 0.0.0.0 0.0.0.0 Dialer0 
no ip http server 
! 
dialer-list 1 protocol ip permit
! 
end

Verify

There is currently no verification procedure available for this configuration.

Troubleshoot

There is currently no specific troubleshooting information available for this configuration.

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Related Information

• Cisco DSL Technology Support Information
• Cisco DSL Product Support Information
• Technical Support - Cisco Systems