About Configuring PPPoE

Use the PPPoE option to configure how the device handles Point-to-Point Protocol over Ethernet (PPPoE) connections. PPPoE enables multiple users at a site to share the same digital subscriber line, cable modem, or wireless connection to the Internet. Some security devices support PPPoE, which enables them to operate compatibly on DSL, Ethernet Direct, and cable networks run by ISPs that use PPPoE for their clients’ Internet access.

Note: Some ISPs use DHCP for their clients’ Internet access. To configure DHCP on an interface, see Example: Assigning TCP/IP Settings for Hosts Using DHCP (NSM Procedure). For more detailed explanation about PPPoE or DHCP on security devices, see the “Fundamentals” volume in the Concepts & Examples ScreenOS Reference Guide.

On devices that support PPPoE, you can configure a PPPoE client instance on any or all interfaces. You configure a specific instance of PPPoE with a username and password and other parameters, and bind the instance to an interface. When two Ethernet interfaces (a primary and a backup) are bound to the Untrust zone, you can configure one or both interfaces for PPPoE. Specifically:

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