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Configuring PPPoE
When the device serves as a PPPoE server, see "Configuring a PPPoE server" for the configuration
procedure.
When the device serves as a PPPoE client, see "Configuring a PPPoE client" for the co
nfiguration
procedure.
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 10, the
PPP 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 10 Network structure 1
• As shown in Figure 11, 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
Router B
Host A Host B Host C
Modem
PPPoE server
PPPoE clientRouter A
DSLAM
Internet
Client device
Carrier device
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