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IPv6 over ATM Networks (RFC2492)

IP.com Disclosure Number: IPCOM000003073D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 9 page(s) / 19K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

G. Armitage: AUTHOR [+3]

Abstract

This document is a companion to the ION working group's architecture document, "IPv6 over Non Broadcast Multiple Access (NBMA) networks". It provides specific details on how to apply the IPv6 over NBMA architecture to ATM networks. This architecture allows conventional host-side operation of the IPv6 Neighbor Discovery protocol, while also supporting the establishment of 'shortcut' ATM forwarding paths (when using SVCs). Operation over administratively configured Point to Point PVCs is also supported.

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Network Working Group G. Armitage

Request for Comments: 2492 Lucent Technologies

Category: Standards Track P. Schulter

BrightTiger Technologies

M. Jork

Digital Equipment GmbH

January 1999

IPv6 over ATM Networks

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 (1999). All Rights Reserved.

Abstract

This document is a companion to the ION working group's architecture

document, "IPv6 over Non Broadcast Multiple Access (NBMA) networks".

It provides specific details on how to apply the IPv6 over NBMA

architecture to ATM networks. This architecture allows conventional

host-side operation of the IPv6 Neighbor Discovery protocol, while

also supporting the establishment of 'shortcut' ATM forwarding paths

(when using SVCs). Operation over administratively configured Point

to Point PVCs is also supported.

1. Introduction.

This document is an ATM-specific companion document to the ION

working group's, "IPv6 over Non Broadcast Multiple Access (NBMA)

networks" specification [1]. Terminology and architectural

descriptions will not be repeated here.

The use of ATM to provide point to point PVC service, or flexible

point to point and point to multipoint SVC service, is covered by

this document.

A minimally conforming IPv6/ATM driver SHALL support the PVC mode of

operation. An IPv6/ATM driver that supports the full SVC mode SHALL

also support PVC mode of operation.

2. Specification Terminology

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",

"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this

document are to be interpreted as described in RFC 2119 [16].

3. PVC Environments

When the ATM network is used in PVC mode, each PVC will connect

exactly two nodes and the use of Neighbor Discovery and other IPv6

features is limited. IPv6/ATM interfaces have only one neighbor on

each Link. The MARS and NHRP protocols are NOT necessary, since

multicast and broadcast operations collapse down to an ATM level

unicast operation. Dynamically discovered shortcuts are not

supported.

The actual details of encapsulations, MTU, and link token generation

are provided in the following sections.

This use of PVC links does not mandate, nor does it prohibit the use

of extensions to the Neighbor Discove...