Method for Transmitting PPP Over Ethernet (PPPoE) (RFC2516)
Original Publication Date: 1999-Feb-01
Included in the Prior Art Database: 2000-Sep-13
Internet Society Requests For Comment (RFCs)
L. Mamakos: AUTHOR [+6]
The Point-to-Point Protocol (PPP)  provides a standard method for transporting multi-protocol datagrams over point-to-point links.
Network Working Group L. Mamakos
Request for Comments: 2516 K. Lidl
Category: Informational J. Evarts
UUNET Technologies, Inc.
RedBack Networks, Inc.
A Method for Transmitting PPP Over Ethernet (PPPoE)
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright (C) The Internet Society (1999). All Rights Reserved.
The Point-to-Point Protocol (PPP)  provides a standard method for
transporting multi-protocol datagrams over point-to-point links.
This document describes how to build PPP sessions and encapsulate PPP
packets over Ethernet.
This specification is intended to provide the facilities which are
defined for PPP, such as the Link Control Protocol, Network-layer
Control Protocols, authentication, and more. These capabilities
require a point-to-point relationship between the peers, and are not
designed for the multi-point relationships which are available in
Ethernet and other multi-access environments.
This specification can be used by multiple hosts on a shared,
Ethernet to open PPP sessions to multiple destinations via one or
more bridging modems. It is intended to be used with broadband
remote access technologies that provide a bridged Ethernet topology,
when access providers wish to maintain the session abstraction
associated with PPP.
This document describes the PPP Over Ethernet encapsulation that is
being deployed by RedBack Networks, RouterWare, UUNET and others.
Modern access technologies are faced with several conflicting goals.
It is desirable to connect multiple hosts at a remote site through
the same customer premise access device. It is also a goal to
provide access control and billing functionality in a manner similar
to dial-up services using PPP. In many access technologies, the most
cost effective method to attach multiple hosts to the customer
premise access device, is via Ethernet. In addition, it is desirable
to keep the cost of this device as low as possible while requiring
little or no configuration.
PPP over Ethernet (PPPoE) provides the ability to connect a network
of hosts over a simple bridging access device to a remote Access
Concentrator. With this model, each host utilizes it's own PPP stack
and the user ...