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Layer Two Tunnelling Protocol (L2TP) Over ATM Adaptation Layer 5 (AAL5) (RFC3355)

IP.com Disclosure Number: IPCOM000009615D
Original Publication Date: 2002-Aug-01
Included in the Prior Art Database: 2002-Sep-05
Document File: 14 page(s) / 25K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Eastlake: AUTHOR [+2]

Abstract

The Layer Two Tunneling Protocol (L2TP) provides a standard method for transporting the link layer of the Point-to-Point Protocol (PPP) between a dial-up server and a Network Access Server, using a network connection in lieu of a physical point-to-point connection. This document describes the use of an Asynchronous Transfer Mode (ATM) network for the underlying network connection. ATM User-Network Interface (UNI) Signaling Specification Version 4.0 or Version 3.1 with ATM Adaptation Layer 5 (AAL5) are supported as interfaces to the ATM network.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 11% of the total text.

Network Working Group                                           A. Singh

Request for Comments: 3355                                      Motorola

Category: Standards Track                                      R. Turner

                                                                Paradyne

                                                                  R. Tio

                                                                S. Nanji

                                                        Redback Networks

                                                             August 2002

                  Layer Two Tunnelling Protocol (L2TP)

                   Over ATM Adaptation Layer 5 (AAL5)

Status of this Memo

   This document specifies an Internet standards track protocol for the

   Internet community, and requests discussion and suggestions for

   improvements.  Please refer to the current edition of the "Internet

   Official Protocol Standards" (STD 1) for the standardization state

   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   The Layer Two Tunneling Protocol (L2TP) provides a standard method

   for transporting the link layer of the Point-to-Point Protocol (PPP)

   between a dial-up server and a Network Access Server, using a network

   connection in lieu of a physical point-to-point connection.  This

   document describes the use of an Asynchronous Transfer Mode (ATM)

   network for the underlying network connection.  ATM User-Network

   Interface (UNI) Signaling Specification Version 4.0 or Version 3.1

   with ATM Adaptation Layer 5 (AAL5) are supported as interfaces to the

   ATM network.

Applicability

   This specification is intended for implementations of L2TP that use

   ATM to provide the communications link between the L2TP Access

   Concentrator and the L2TP Network Server.

Singh, et. al.              Standards Track                     [Page 1]

RFC 3355                     L2TP Over AAL5                  August 2002

1. Introduction

   The Point-to-Point Protocol (PPP) [RFC1661], is frequently used on

   the link between a personal computer with a dial modem and a network

   service provider, or NSP.  The Layer Two Tunneling Protocol (L2TP)

   [RFC2661] enables a dial-up server to provide access to a remote NSP

   by extending the PPP connection through a tunnel in a network to

   which...