Specifications
Table Of Contents
- Contents
- Preface
- Getting Started
- Basic Router Configuration
- Interface Port Labels
- Viewing the Default Configuration
- Information Needed for Configuration
- Configuring Basic Parameters
- Configuring Static Routes
- Configuring Dynamic Routes
- Configuring Enhanced IGRP
- Basic Router Configuration
- Configuring Your Router for Ethernet and DSL Access
- Sample Network Deployments
- Configuring PPP over Ethernet with NAT
- Configuring PPP over ATM with NAT
- Configuring a LAN with DHCP and VLANs
- Configuring a VPN Using Easy VPN and an IPSec Tunnel
- Configure the IKE Policy
- Configure Group Policy Information
- Apply Mode Configuration to the Crypto Map
- Enable Policy Lookup
- Configure IPSec Transforms and Protocols
- Configure the IPSec Crypto Method and Parameters
- Apply the Crypto Map to the Physical Interface
- Create an Easy VPN Remote Configuration
- Verifying Your Easy VPN Configuration
- Configuration Example
- Configuring VPNs Using an IPSec Tunnel and Generic Routing Encapsulation
- Configuring a Simple Firewall
- Configuring a Wireless LAN Connection
- Sample Configuration
- Configuring Additional Features and Troubleshooting
- Additional Configuration Options
- Configuring Security Features
- Configuring Dial Backup and Remote Management
- Troubleshooting
- Reference Information
- Cisco IOS Software Basic Skills
- Concepts
- ROM Monitor
- Common Port Assignments

1-8
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 1 Basic Router Configuration
Configuring Basic Parameters
Configure the ATM WAN Interface
This procedure applies only to the Cisco 1801, Cisco 1802, and Cisco 1803 models.
Perform these steps to configure the ATM interface, beginning in global configuration mode:
Command Purpose
Step 1
For the Cisco 1803 only:
controller dsl 0
mode atm
exit
Example:
Router(config)# controller dsl 0
Router(config-controller)# mode atm
Router(config-controller)# exit
Router(config)#
For routers using the G.SHDSL signaling, perform
these commands. Ignore this step for routers using
ADSL signaling.
Step 2
interface type number
Example:
Router(config)# interface atm0
Router(config-int)#
Enters interface configuration mode.
Step 3
ip address ip-address mask
Example:
Router(config-int)# ip address
200.200.100.1 255.255.255.0
Router(config-int)#
Sets the IP address and subnet mask for the ATM
interface.
Step 4
no shutdown
Example:
Router(config-int)# no shutdown
Router(config-int)#
Enables the ATM 0 interface.
Step 5
exit
Example:
Router(config-int)# exit
Router(config)#
Exits interface configuration mode and returns to
global configuration mode.