RFC 3337 (rfc3337) - Page 1 of 7
Class Extensions for PPP over Asynchronous Transfer Mode Adaptation Layer 2
Alternative Format: Original Text Document
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