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OSI NSAPs and IPv6 (RFC1888)

IP.com Disclosure Number: IPCOM000004217D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 16 page(s) / 22K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Bound: AUTHOR [+4]

Related Documents

10.17487/RFC1888: DOI

Abstract

This document recommends that network implementors who have planned or deployed an OSI NSAP addressing plan, and who wish to deploy or transition to IPv6, should redesign a native IPv6 addressing plan to meet their needs. This memo defines an Experimental Protocol for the Internet community.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 11% of the total text.

Network Working Group J. Bound Request for Comments: 1888 Digital Equipment Corporation Category: Experimental B. Carpenter CERN D. Harrington Digital Equipment Corporation J. Houldsworth ICL Network Systems A. Lloyd Datacraft Technologies August 1996

OSI NSAPs and IPv6

Status of this Memo

This memo defines an Experimental Protocol for the Internet community. This memo does not specify an Internet standard of any kind. Discussion and suggestions for improvement are requested. Distribution of this memo is unlimited.

Abstract

This document recommends that network implementors who have planned or deployed an OSI NSAP addressing plan, and who wish to deploy or transition to IPv6, should redesign a native IPv6 addressing plan to meet their needs. However, it also defines a set of mechanisms for the support of OSI NSAP addressing in an IPv6 network. These mechanisms are the ones that MUST be used if such support is required. This document also defines a mapping of IPv6 addresses within the OSI address format, should this be required.

Table of Contents

1. General recommendation on NSAP addressing plans..............2 2. Summary of defined mechanisms................................4 3. Restricted NSAPA in a 16-byte IPv6 address for ICD and DCC...4 3.1 Routing restricted NSAPAs...................................5 4. Truncated NSAPA used as an IPv6 address......................6 4.1 Routing truncated NSAPAs....................................8 5. Carriage of full NSAPAs in IPv6 destination option...........9 6. IPv6 addresses inside an NSAPA..............................10 7. Security Considerations.....................................11 Acknowledgements...............................................11 References.....................................................12 Annex A: Summary of NSAP Allocations...........................13 Annex B: Additional Rationale..................................14 Authors’ Addresses.............................................16

Bound, et. al. Experimental [Page 1]

RFC 1888 OSI NSAPs and IPv6 August 1996

1. General recommendation on NSAP addressing plans

This recommendation is addressed to network implementors who have already planned or deployed an OSI NSAP addressing plan for the usage of OSI CLNP [IS8473] according to the OSI network layer addressing plan [IS8348] using ES-IS and IS-IS routing [IS9542, IS10589]. It recommends how they should adapt their addressing plan for use with IPv6 [RFC1883].

The majority of known CLNP addressing plans use either the Digital Country Code (DCC) or the International Code Designator (ICD) formats defined in [IS8348]. A particular example of this is the US Government OSI Profile Version 2 (GOSIP) addressing plan [RFC1629]. The basic NSAP addressing scheme and current implementations are summarised in Annex A.

[IS8348] specifies a maximum NSAPA (NSAP address) size of 20 bytes and some network implementors have designed address allocation schemes which make use of this 20 byte address...

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