IPv6 Prefix Options for Dynamic Host Configuration Protocol (DHCP) version 6
RFC 3633
Document | Type |
RFC - Proposed Standard
(December 2003; Errata)
Obsoleted by RFC 8415
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|
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Authors | Ole Trøan , Ralph Droms | ||
Last updated | 2020-01-21 | ||
Stream | Internet Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized with errata bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 3633 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Thomas Narten | ||
IESG note | 2003-12-18: RFC 3633 published. | ||
Send notices to | (None) |
Network Working Group O. Troan Request for Comments: 3633 R. Droms Category: Standards Track Cisco Systems December 2003 IPv6 Prefix Options for Dynamic Host Configuration Protocol (DHCP) version 6 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 (2003). All Rights Reserved. Abstract The Prefix Delegation options provide a mechanism for automated delegation of IPv6 prefixes using the Dynamic Host Configuration Protocol (DHCP). This mechanism is intended for delegating a long- lived prefix from a delegating router to a requesting router, across an administrative boundary, where the delegating router does not require knowledge about the topology of the links in the network to which the prefixes will be assigned. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. DHCPv6 specification dependency . . . . . . . . . . . . . . 3 3. Terminology . . . . . . . . . . . . . . . . . . . . . . . . 3 4. Requirements . . . . . . . . . . . . . . . . . . . . . . . . 3 5. Model and Applicability . . . . . . . . . . . . . . . . . . 3 5.1. Example network architecture . . . . . . . . . . . . . 4 6. Identity Association for Prefix Delegation . . . . . . . . . 5 7. Overview of DHCP with Prefix Delegation . . . . . . . . . . 6 8. Interface Selection . . . . . . . . . . . . . . . . . . . . 7 9. Identity Association for Prefix Delegation Option . . . . . 7 10. IA_PD Prefix option . . . . . . . . . . . . . . . . . . . . 9 11. Delegating Router Solicitation . . . . . . . . . . . . . . . 11 11.1. Requesting router behavior . . . . . . . . . . . . . . 11 11.2. Delegating router behavior . . . . . . . . . . . . . . 11 12. Requesting router initiated prefix delegation . . . . . . . 12 Troan & Droms Standards Track [Page 1] RFC 3633 IPv6 Prefix Options for DHCPv6 December 2003 12.1. Requesting router behavior . . . . . . . . . . . . . . 12 12.2. Delegating Router behavior . . . . . . . . . . . . . . 14 13. Prefix Delegation reconfiguration . . . . . . . . . . . . . 15 13.1. Delegating Router behavior . . . . . . . . . . . . . . 15 13.2. Requesting Router behavior . . . . . . . . . . . . . . 15 14. Relay agent behavior . . . . . . . . . . . . . . . . . . . . 15 15. Security Considerations . . . . . . . . . . . . . . . . . . 16 16. IANA Considerations . . . . . . . . . . . . . . . . . . . . 16 17. Intellectual Property Statement. . . . . . . . . . . . . . . 17 18. References . . . . . . . . . . . . . . . . . . . . . . . . . 17 18.1. Normative References . . . . . . . . . . . . . . . . . 17 18.2. Informative References . . . . . . . . . . . . . . . . 17 19. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 18 20. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . 18 21. Full Copyright Statement . . . . . . . . . . . . . . . . . . 19 1. Introduction This document describes new options for Dynamic Host Configuration Protocol (DHCP) that provide a mechanism for the delegation of IPv6 prefixes [1]. Through these options, a delegating router can delegate prefixes to authorized requesting routers. The prefix delegation mechanism described in this document is intended for simple delegation of prefixes from a delegating router to requesting routers. It is appropriate for situations in which the delegating router does not have knowledge about the topology of the networks to which the requesting router is attached, and the delegating router does not require other information aside from the identity of the requesting router to choose a prefix for delegation. For example, these options would be used by a service provider to assign a prefix to a Customer Premise Equipment (CPE) device acting as a router between the subscriber's internal network and the service provider's core network. Many applications expect stable addresses. Even though this mechanism makes automatic renumbering easier, it is expected that prefixes have a long lifespan. During renumbering it is expected that the old and the new prefix co-exist for some time. The design of this prefix delegation mechanism meets the requirementsShow full document text