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Router Renumbering for IPv6 (RFC2894)

IP.com Disclosure Number: IPCOM000005013D
Original Publication Date: 2000-Aug-01
Included in the Prior Art Database: 2001-Jul-13
Document File: 33 page(s) / 69K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Crawford: AUTHOR

Abstract

IPv6 Neighbor Discovery and Address Autoconfiguration conveniently make initial assignments of address prefixes to hosts. Aside from the problem of connection survival across a renumbering event, these two mechanisms also simplify the reconfiguration of hosts when the set of valid prefixes changes.

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Network Working Group M. Crawford Request for Comments: 2894 Fermilab Category: Standards Track August 2000

Router Renumbering for IPv6

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 (2000). All Rights Reserved.

IESG Note:

This document defines mechanisms for informing a set of routers of renumbering operations they are to perform, including a mode of operation in environments in which the exact number of routers is unknown. Reliably informing all routers when the actual number of routers is unknown is a difficult problem. Implementation and operational experience will be needed to fully understand the applicabilty and scalability aspects of the mechanisms defined in this document when the number of routers is unknown.

Abstract

IPv6 Neighbor Discovery and Address Autoconfiguration conveniently make initial assignments of address prefixes to hosts. Aside from the problem of connection survival across a renumbering event, these two mechanisms also simplify the reconfiguration of hosts when the set of valid prefixes changes.

This document defines a mechanism called Router Renumbering ("RR") which allows address prefixes on routers to be configured and reconfigured almost as easily as the combination of Neighbor Discovery and Address Autoconfiguration works for hosts. It provides a means for a network manager to make updates to the prefixes used by and advertised by IPv6 routers throughout a site.

Crawford Standards Track [Page 1]

RFC 2894 Router Renumbering for IPv6 August 2000

Table of Contents

1. Functional Overview ....................................... 2 2. Definitions ............................................... 4 2.1. Terminology ......................................... 4

2.2. Requirements ........................................ 5 3. Message Format ............................................ 5 3.1. Router Renumbering Header ........................... 7 3.2. Message Body Command Message ..................... 9 3.2.1. Prefix Control Operation ...................... 9 3.2.1.1. Match-Prefix Part ....................... 9

3.2.1.2. Use-Prefix Part ......................... 11

3.3. Message Body Result Message ...................... 12 4. Message Processing ........................................ 14 4.1. Header Check ........................................ 14 4.2. Bounds Check ........................................ 15 4.3. Execution ........................................... 16

4.4. Summary of Effects .................................. 17 5. Sequence Number Reset ..................................... 18 6. IANA Considerations ....................................... 19 7. Security Considerations ..........