Configure another PPPoE client 

Setting Up the PPPoE Client.

Learn more about PPPoE 

Creating PPPoE Tunnels for DSL Support.

Have users of configured PPPoE clients begin running PPP over the DSL line 

Instruct the users to type pppd call ISP-server-name and then run an application or service.

Troubleshoot PPPoE and PPP problems 

Chapter 35, Fixing Common Problems (Tasks).

Configure a PPPoE access server 

Setting Up a PPPoE Access Server.