RFC 3301 (rfc3301) - Page 1 of 19

Layer Two Tunnelling Protocol (L2TP): ATM access network extensions

Alternative Format: Original Text Document
Next >
Network Working Group                                         Y. T'Joens
Request for Comments: 3301                                      B. Sales
Category: Standards Track                                        Alcatel
                                                           P. Crivellari
                                                                Belgacom
                                                               June 2002


                 Layer Two Tunnelling Protocol (L2TP):
                     ATM access network extensions

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

   This document augments the procedures described in RFC 2661 to
   further support ATM SVC (Switched Virtual Circuits) or PVC (Permanent
   Virtual Circuits) based access networks.  L2TP (Layer 2 Tunneling
   Protocol) specifies a protocol for tunnelling PPP packets over packet
   based networks and over IP networks in particular.  L2TP supports
   remote access by ISDN and PSTN networks.  The extensions defined
   within this document allow for asymmetric bi-directional call
   establishment and service selection in the ATM access network.

Table Of Contents

   1. Introduction ..................................................  2
   1.1 Conventions ..................................................  2
   2. Assumptions ...................................................  3
   2.1 Topology .....................................................  3
   2.2 Connection Establishment .....................................  3
   2.3 LCP Negotiation ..............................................  3
   3. ATM access enhanced procedures ................................  3
   3.1 ATM connectivity .............................................  4
   3.2 Tunnel establishment .........................................  4
   3.3 Call establishment ...........................................  5
   3.3.1 Incoming Call Establishment ................................  5
   3.3.2 Outgoing Call Establishment ................................  6



T'Joens, et al.             Standards Track
Next >