TP: PPPoE : PPP over Ethernet (DSL connection) Lab
You know what PPP is and how does it work. The Point-to-Point Protocol is a good Layer 2 protocol that allows two peers to talk directly. Furthermore, it negotiates some parameters before considering the link up, including authentication. However, PPP runs on serial links only. With PPPoE, we overcome this limit by encapsulating PPP into Ethernet frames. Welcome to the world of Point-to-Point Protocol over Ethernet, that brings the befits of PPP on Ethernet links.