Specifications

Chapter 5. Configuring Software Options 127

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 companyÕs 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 ÒInternetÓ (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.

remote add internet

remote disauthen internet

remote setoursysname name_isp_expects internet

remote setourpass secret_isp_expects internet

remote addiproute 0.0.0.0 0.0.0.0 1 internet

remote setphone isdn 1 5551000 internet

remote setphone isdn 2 5553000 internet

eth ip enable

eth ip address 192.168.254.254 255.255.255.0

¥ Configuration Process

The following sets of questions, answers, and configuration commands specific to the L2TP tunnel and

the PPP remote will assist you in configuring the client side router SOHO (also referred to as home

router). Note that the server side is referred to as either company router or router at work.

L2TP tunnel configuration

L2TP tunnel-specific questions

1. What is the host name of the router at home that the user is configuring?

2. What is the host name of the company router at work to which the user will tunnel?

3. What is the shared CHAP secret used for tunneling between the home router (client) and the

company router (server)?

4. What is the IP address of the company router to which the user will tunnel?

L2TP tunnel answers. For our example, letÕs assume the answers to the above tunnel-specific questions

are as follows:

1. Home_Router