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

3-3
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 3 Configuring PPP over Ethernet with NAT
Configure the Fast Ethernet WAN Interfaces
Configure the Fast Ethernet WAN Interfaces
In this scenario, the PPPoE client (your Cisco router) communicates over a 10/100-Mbps Ethernet
interface on both the inside and the outside.
Note The Cisco 1800 series integrated services fixed-configuration routers have a hardware limitation on the
Fast Ethernet ports FE0 and FE1. In half-duplex mode, when traffic reaches or exceeds 100% capacity
(equal to or greater than 5 Mbps in each direction), the interface experiences excessive collisions and
resets every second. To avoid this problem, you must limit the traffic capacity to less than 100%.
Step 3
request-dialin
Example:
Router(config-vpdn-grp)# request-dialin
Router(config-vpdn-grp)#
Creates a request-dialin VPDN subgroup,
indicating the dialing direction, and initiates the
tunnel.
Step 4
initiate to ip ip-address
Example:
Router(config-vpdn-grp)# initiate to
192.168.1.1
Router(config-vpdn-grp)#
Specifies the address to which requests are
tunneled.
For details about this command and additional
parameters that can be set, see the
Cisco IOS Dial
Technologies Command Reference.
Step 5
protocol {l2f | l2tp | pppoe | any}
Example:
Router(config-vpdn-grp)# protocol pppoe
Router(config-vpdn-grp)#
Specifies the type of sessions the VPDN subgroup
can establish.
Step 6
exit
Example:
Router(config-vpdn-grp)# exit
Router(config-vpdn)#
Exits VPDN group configuration.
Step 7
exit
Example:
Router(config-vpdn)# exit
Router(config)#
Exits VPDN configuration, returning to global
configuration mode.
Command or Action Purpose