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IPv6 Global Unicast Address Format (RFC3587)

IP.com Disclosure Number: IPCOM000018807D
Original Publication Date: 2003-Aug-01
Included in the Prior Art Database: 2003-Aug-12
Document File: 6 page(s) / 9K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Hinden: AUTHOR [+3]

Abstract

This document obsoletes RFC 2374, "An IPv6 Aggregatable Global Unicast Address Format". It defined an IPv6 address allocation structure that includes Top Level Aggregator (TLA) and Next Level Aggregator (NLA). This document makes RFC 2374 and the TLA/NLA structure historic.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 31% of the total text.

Network Working Group                                          R. Hinden

Request for Comments: 3587                                         Nokia

Obsoletes: 2374                                               S. Deering

Category: Informational                                            Cisco

                                                             E. Nordmark

                                                                     Sun

                                                             August 2003

                   IPv6 Global Unicast Address Format

Status of this Memo

   This memo provides information for the Internet community.  It does

   not specify an Internet standard of any kind.  Distribution of this

   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.

Abstract

   This document obsoletes RFC 2374, "An IPv6 Aggregatable Global

   Unicast Address Format".  It defined an IPv6 address allocation

   structure that includes Top Level Aggregator (TLA) and Next Level

   Aggregator (NLA).  This document makes RFC 2374 and the TLA/NLA

   structure historic.

1.  Introduction

   RFC 2374, "An IPv6 Aggregatable Global Unicast Address Format",

   defined an IPv6 address allocation structure that includes TLA and

   NLA.  This document replaces RFC 2374, and makes RFC 2374 and the

   TLA/NLA structure historic.

2.  TLA/NLA Made Historic

   The TLA/NLA scheme has been replaced by a coordinated allocation

   policy defined by the Regional Internet Registries (RIRs) [IPV6RIR].

   Part of the motivation for obsoleting the TLA/NLA structure is

   technical; for instance, there is concern that TLA/NLA is not the

   technically best approach at this stage of the deployment of IPv6.

   Moreover, the allocation of IPv6 addresses is related to policy and

   to the stewardship of the IP address space and routing table size,

   which the RIRs have been managing for IPv4.  It is likely that the

   RIRs' policy will evolve as IPv6 deployment proceeds.

Hinden, et al.               Informational                      [Page 1]

RFC 3587           IPv6 Global Unicast Address Format        August 2003

   The IETF has provided technical input to the RIRs (for example,

   [RFC3177]), which the RIRs have taken into account when defining

   their address allocation policy.

   RFC 2374 was the definition of addresses for Format Prefix 001

   (2000::/3) which is formally made historic by this document.  Even

   though currently only 2000::/3 is being delegated by the IANA,

   i...