In a basic PPPoE server setup, which interface is typically specified for the PPPoE server to listen on?

In a basic PPPoE server setup, which interface is typically specified for the PPPoE server to listen on?

• A. The Ethernet interface named ether1
• B. The VPN interface
• C. The DNS interface
• D. The LAN bridge

Answer: (A)

PPPoE traffic on the access link is received on the Ethernet interface that connects to the clients. In a basic setup, the PPPoE server listens on that physical Ethernet interface (often named ether1) so it can see the PPPoE discovery packets from client devices and establish sessions. The VPN interface is for VPN tunnels, not for PPPoE discovery; the DNS interface isn’t involved in PPPoE listening; a LAN bridge could be used in some topologies to group ports, but the standard, straightforward setup binds the PPPoE service to the actual Ethernet interface facing the clients. Therefore, ether1 is the typical listening interface.

PPPoE traffic on the access link is received on the Ethernet interface that connects to the clients. In a basic setup, the PPPoE server listens on that physical Ethernet interface (often named ether1) so it can see the PPPoE discovery packets from client devices and establish sessions. The VPN interface is for VPN tunnels, not for PPPoE discovery; the DNS interface isn’t involved in PPPoE listening; a LAN bridge could be used in some topologies to group ports, but the standard, straightforward setup binds the PPPoE service to the actual Ethernet interface facing the clients. Therefore, ether1 is the typical listening interface.