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
1-2
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 1 Basic Router Configuration
Viewing the Default Configuration
Viewing the Default Configuration
When you first boot up your Cisco router, some basic configuration has already been performed. All of
the LAN and WAN interfaces have been created, console and VTY ports are configured, and the inside
interface for Network Address Translation has been assigned. Use the show
running-config command
to view the initial configuration, as shown in
Example 1.
Note If you are unable to view the initial configuration and you get a No Password Set error message, you
must reset the initial password. For details, see the
“Recovering a Lost Password” section in Chapter 14,
“Troubleshooting”.
Cisco 1802 Fast Ethernet LANs SWITCH and FE8–FE5 (top), FE x and
FE4–FE1 (bottom)
Fast Ethernet WANs FE0
ATM WAN ADSLoISDN
Wireless LAN LEFT, RIGHT/PRIMARY
BRI ISDN S/T
Cisco 1803 Fast Ethernet LANs SWITCH and FE8–FE5 (top), FE x and
FE4–FE1 (bottom)
Fast Ethernet WANs FE0
ATM WAN G.SHDSL
Wireless LAN LEFT, RIGHT/PRIMARY
BRI ISDN S/T
Cisco 1811 Fast Ethernet LANs SWITCH and FE9–FE6 (top), FE x and
FE5–FE2 (bottom)
Fast Ethernet WANs FE0–FE1
Wireless LAN LEFT, RIGHT/PRIMARY
USB 1–0
V. 9 2 MODEM
Cisco 1812 Fast Ethernet LANs SWITCH and FE9–FE6 (top), FE x and
FE5–FE2 (bottom)
Fast Ethernet WANs FE0–FE1
Wireless LAN LEFT, RIGHT/PRIMARY
BRI ISDN S/T
USB 1–0
Table 1 Supported Interfaces and Associated Port Labels by Cisco Router (continued)
Router Interface Port Label