Browse Prior Art Database

Class Extensions for PPP over Asynchronous Transfer Mode Adaptation Layer 2 (RFC3337)

IP.com Disclosure Number: IPCOM000010533D
Original Publication Date: 2002-Dec-01
Included in the Prior Art Database: 2002-Dec-13
Document File: 8 page(s) / 15K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Thompson: AUTHOR [+3]

Abstract

The Point-to-Point Protocol (PPP) over Asynchronous Transfer Mode (ATM) Adaptation Layer 2 defines the encapsulation that allows a PPP session to be transported over an ATM virtual circuit using the ATM Adaptation Layer 2 (AAL2) adaptation layer. This document defines a set of class extensions to PPP over AAL2 that implement equivalent functionality to Multi Class Multi Link PPP over a single ATM virtual circuit. Instead of using Multi Link PPP as the basis for fragmentation functionality, this document uses the functionality of the Segmentation and Reassembly Service Specific Convergence Sublayer that is already required as the basic encapsulation format of PPP over AAL2.

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Network Working Group� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B. Thompson

Request for Comments: 3337� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � T. Koren

Category: Standards Track� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Cisco Systems

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � B. Buffam

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Seaway Networks

� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � December 2002

� � � � � � � � � � � � � � � � � � � � Class Extensions for PPP over

� � � � � � � � � Asynchronous Transfer Mode Adaptation Layer 2 (AAL2)

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 Point-to-Point Protocol (PPP) over Asynchronous Transfer Mode

� � (ATM) Adaptation Layer 2 defines the encapsulation that allows a PPP

� � session to be transported over an ATM virtual circuit using the ATM

� � Adaptation Layer 2 (AAL2) adaptation layer.� This document defines a

� � set of class extensions to PPP over AAL2 that implement equivalent

� � functionality to Multi Class Multi Link PPP over a single ATM virtual

� � circuit.� Instead of using Multi Link PPP as the basis for

� � fragmentation functionality, this document uses the functionality of

� � the Segmentation and Reassembly Service Specific Convergence Sublayer

� � that is already required as the basic encapsulation format of PPP

� � over AAL2.

1. Introduction

� � Using AAL2 as an adaptation layer for PPP transport over ATM provides

� � a bandwidth efficient transport for IP applications that generate

� � small packets.� An example IP application that generates small

� � packets is RTP encapsulated voice (Voice over IP).

Thompson, et. al.� � � � � � � � � � Standards Track� � � � � � � � � � � � � � � � � � � � [Page 1]

RFC 3337� � � � � � � � � � Class Extensions for PPP over AAL2� � � � � December 2002

� � In addition to bandwidth efficiency, real-time applications such as

� � voice require low latency.� RFC 2689 [2] describes an architecture

� � for providing transport services for real time applications on low

� � bit rate links.� The main components of the architecture are: a

� � real-time encapsulation format for asynchronous and synchronous low-

� � bitrate links, a header compression architecture optimized for real-

� � time flows, elements of negotiation ...