IP over ATM: A Framework Document (RFC1932)
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2019-Feb-12
Internet Society Requests For Comment (RFCs)
R. Cole: AUTHOR [+2]
It is hoped that this document, in classifying ATM approaches and issues will help to focus the IP over ATM working group's direction.This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.
Network Working Group R. Cole Request for Comments: 1932 D. Shur Category: Informational AT&T Bell Laboratories C. Villamizar ANS April 1996
IP over ATM: A Framework Document
Status of this Memo
This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited.
The discussions of the IP over ATM working group over the last several years have produced a diverse set of proposals, some of which are no longer under active consideration. A categorization is provided for the purpose of focusing discussion on the various proposals for IP over ATM deemed of primary interest by the IP over ATM working group. The intent of this framework is to help clarify the differences between proposals and identify common features in order to promote convergence to a smaller and more mutually compatible set of standards. In summary, it is hoped that this document, in classifying ATM approaches and issues will help to focus the IP over ATM working group’s direction.
The IP over ATM Working Group of the Internet Engineering Task Force (IETF) is chartered to develop standards for routing and forwarding IP packets over ATM sub-networks. This document provides a classification/taxonomy of IP over ATM options and issues and then describes various proposals in these terms.
The remainder of this memorandum is organized as follows:
o Section 2 defines several terms relating to networking and internetworking.
o Section 3 discusses the parameters for a taxonomy of the different ATM models under discussion.
o Section 4 discusses the options for low level encapsulation.
Cole, Shur & Villamizar Informational [Page 1]
RFC 1932 IP over ATM: A Framework Document April 1996
o Section 5 discusses tradeoffs between connection oriented and connectionless approaches.
o Section 6 discusses the various means of providing direct connections across IP subnet boundaries.
o Section 7 discusses the proposal to extend IP routing to better accommodate direct connections across IP subnet boundaries.
o Section 8 identifies several prominent IP over ATM proposals that have been discussed within the IP over ATM Working Group and their relationship to the framework described in this document.
o Section 9 addresses the relationship between the documents developed in the IP over ATM and related working groups and the various models discussed.
2. Definitions and Terminology
We define several terms:
A Host or End System: A host delivers/receives IP packets to/from other systems, but does not relay IP packets.
A Router or Intermediate System: A router delivers/receives IP packets to/from other systems, and relays IP packets among systems.
IP Subnet: In an IP subnet, all members of the subnet are able to transmit packets to all other members of the subnet directly, without forwarding by intermediate entities. No two subnet members are considered closer in the IP topology than any other. Fro...