User Guide

Chapter 4. Configuring Special Features 101

Miscellaneous commands:

Commands used to delete a tunnel, close a tunnel, or set up advanced L2TP configuration features such

as traffic performance fine-tuning are discussed in the

L2TP Commands

section of Chapter 5.

PPP Session Configuration

Two commands are used to extend a PPP link from a remote site to a corporate site across the Internet and

establish a tunnel. For additional information on the syntax of the commands listed below, refer to the

Remote Commands

section of Chapter 5.

remote setLNS

remote setl2tpclient

Sample Configurations

Two sample configurations are described in this section:

• A simple configuration. This example describes the information needed to configure one side of the tunnel

(the client side).

• A complete configuration. This example describes the information needed to configure both sides of the

tunnel (client and server sides).

Simple L2TP Client Configuration Example

This example shows how a telecommuter working at home (client side) can configure his/her router SOHO to

tunnel to the company’s LAN (server side).

The information given in the Configuration Process section below provides a framework reference for this

type of L2TP Client configuration.

Assumptions

In this example, the following information is assumed:

• The server side (the company) has an LNS router connected to the Internet.

• The client side has an existing route to the Internet with the remote “Internet” (refer to the following

Note, if you need sample configuration commands).

• IP routing is enabled (refer to the following Note, if you need sample configuration commands).

Note:

Below is an example of configuration commands that can be used to enable IP routing and

establish a route to the Internet.