Overview
PPPoE provides the ability for multiple hosts to open PPP sessions to your system using one or more bridging modems. When service providers want to maintain the session abstraction associated with PPP, PPPoE is used with Broadband Remote Access Server (B-RAS) technologies that provide a bridged Ethernet topology. PPPoE can be configured over ATM or on Ethernet modules with or without VLANs.
PPPoE has two distinct stages: Discovery and Session.
- Discovery—PPPoE allows each PPP session to learn the Ethernet address of the remote peer and to establish a unique session identifier.
- Session—When Discovery is completed successfully, both the host and the selected remote access concentrator have the information they need to build their point-to-point connection over Ethernet. The only parameter that you can configure is the number of PPPoE sessions.