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

1-6
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 1 Basic Router Configuration
Configuring Basic Parameters
Configure Global Parameters
Perform these steps to configure selected global parameters for your router:
For complete information on the global parameter commands, see the Cisco IOS Release 12.3
documentation set.
Configure Fast Ethernet LAN Interfaces
The Fast Ethernet LAN interfaces on your router are automatically configured as part of the default
VLAN and as such, they are not configured with individual addresses. Access is afforded through the
VLAN. You may assign the interfaces to other VLANs if desired. For more information about creating
VLANs, see
Chapter 5, “Configuring a LAN with DHCP and VLANs.”
Command Purpose
Step 1
configure terminal
Example:
Router> enable
Router# configure terminal
Router(config)#
Enters global configuration mode, when using the
console port.
If you are connecting to the router using a remote
terminal, use the following:
telnet router name or address
Login: login id
Password: *********
Router> enable
Step 2
hostname name
Example:
Router(config)# hostname Router
Router(config)#
Specifies the name for the router.
Step 3
enable secret password
Example:
Router(config)# enable secret cr1ny5ho
Router(config)#
Specifies an encrypted password to prevent
unauthorized access to the router.
Step 4
no ip domain-lookup
Example:
Router(config)# no ip domain-lookup
Router(config)#
Disables the router from translating unfamiliar
words (typos) into IP addresses.