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
3-2
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 3 Configuring PPP over Ethernet with NAT
Configure the Virtual Private Dialup Network Group Number
PPPoE
The PPPoE Client feature on the router provides PPPoE client support on Ethernet interfaces. A dialer
interface must be used for cloning virtual access. Multiple PPPoE client sessions can be configured on
an Ethernet interface, but each session must use a separate dialer interface and a separate dialer pool.
A PPPoE session is initiated on the client side by the Cisco 1800 series router. An established PPPoE
client session can be terminated in one of two ways:
• By entering the clear vpdn tunnel pppoe command. The PPPoE client session terminates, and the
PPPoE client immediately tries to reestablish the session. This also occurs if the session has a
timeout.
• By entering the no pppoe-client dial-pool number command to clear the session. The PPPoE client
does not attempt to reestablish the session.
NAT
NAT (represented as the dashed line at the edge of the Cisco router) signifies two addressing domains
and the inside source address. The source list defines how the packet travels through the network.
Configuration Tasks
Perform the following tasks to configure this network scenario:
• Configure the Virtual Private Dialup Network Group Number
• Configure the Fast Ethernet WAN Interfaces
• Configure the Dialer Interface
• Configure Network Address Translation
An example showing the results of these configuration tasks is shown in the section “Configuration
Example.”
Configure the Virtual Private Dialup Network Group Number
Configuring a virtual private dialup network (VPDN) enables multiple clients to communicate through
the router by way of a single IP address.
Complete the following steps to configure a VPDN, starting from the global configuration mode. See
the
“Configure Global Parameters” section on page 1-6 for details about entering this mode.
Command or Action Purpose
Step 1
vpdn enable
Example:
Router(config)# vpdn enable
Router(config-vpdn)#
Enables VPDN on the router.
Step 2
vpdn group name
Example:
Router(config-vpdn)# vpdn group 1
Router(config-vpdn-grp)#
Creates and associates a VPDN group with a
customer or VPDN profile.