Introduction to PPPoE

PPPoE, the abbreviation for Point-to-Point Protocol over Ethernet, combines PPP protocol and Ethernet to implement access control, authentication and accounting on clients during IP address allocation.

The implementation of PPPoE protocol consists of two stages: discovery stage and PPP session stage.

• Discovery stage: The client discovers the access concentrator by identifying the Ethernet MAC address of the access concentrator and establishing a PPPoE session ID.
• PPP session stage: The client and the access concentrator negotiate over PPP. The negotiation procedure is the same with that of a standard PPP negotiation.

The interfaces can be configured as PPPoE clients to accept PPPoE connections.