R3303-HP HSR6800 Routers Layer 2 - WAN Configuration Guide

Configuring PPPoE

Overview

Point-to-Point Protocol over Ethernet (PPPoE) extends PPP by transporting PPP packets encapsulated in

Ethernet over point-to-point links.

PPPoE can provide access to the Internet for the hosts in an Ethernet through a remote access device and

implement access control and accounting on a per-host basis. Integrating the low cost of Ethernet and

scalability and management functions of PPP, PPPoE gained popularity in various application

environments, such as residential networks.

PPPoE network structure

PPPoE uses the client/server model. The PPPoE client initiates a connection request to the PPPoE server.

After session negotiation between them is complete, the PPPoE server provides access control and

authentication to the PPPoE client.

The following network structures are available:

• As shown in Figure 18, the P

PP session is established between devices (Router A and Router B). All

hosts share one PPP session for data transmission without being installed with PPPoE client dialup

software. This network structure is typically used by enterprises.

Figure 18 Network structure 1

• As shown in Figure 19, the PPP session is established between each host (PPPoE client) and the

carrier router (PPPoE server). The service provider assigns an account to each host for billing and

control. The host must be installed with PPPoE client dialup software. This network structure is

applicable to campus and residential environments.

Router B

Host A Host B Host C

Modem

PPPoE server

PPPoE clientRouter A

DSLAM

Internet

Client device

Carrier device