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

5-3
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-03
Chapter 5 Configuring a LAN with DHCP and VLANs
Configure DHCP
Configuration Example
The following configuration example shows a portion of the configuration file for the DCHP
configuration described in this chapter.
ip dhcp excluded-address 192.168.9.0
!
ip dhcp pool dpool1
import all
network 10.10.0.0 255.255.255.0
default-router 10.10.10.10
dns-server 192.168.35.2
domain-name cisco.com
!
ip domain name smallbiz.com
ip name-server 192.168.11.12
Step 6
import all
Example:
Router(config-dhcp)# import all
Router(config-dhcp)#
Imports DHCP option parameters into the DHCP
portion of the router database.
Step 7
default-router address [address2...address8]
Example:
Router(config-dhcp)# default-router 10.1.1.1
Router(config-dhcp)#
Specifies up to 8 default routers for a DHCP client.
Step 8
dns-server address [address2...address8]
Example:
Router(config-dhcp)# dns-server 192.168.35.2
Router(config-dhcp)#
Specifies up to 8 DNS servers available to a DHCP
client.
Step 9
domain-name domain
Example:
Router(config-dhcp)# domain-name cisco.com
Router(config-dhcp)#
Specifies the domain name for a DHCP client.
Step 10
exit
Example:
Router(config-dhcp)# exit
Router(config)#
Exits DHCP configuration mode, and enters
global configuration mode.
Command Purpose