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 billing and control. The host must be installed with PPPoE client dialup software. This network structure is applicable to campus and residential environments.
Figure 11: Network structure 2
