IPv6 Enterprise Network Renumbering Scenarios and Guidelines
draft-ietf-6renum-enterprise-01

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Document Type Active Internet-Draft (candidate for 6renum WG)
Last updated 2012-07-16
Replaces draft-jiang-6renum-enterprise
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Network Working Group                                        S. Jiang
Internet Draft                                                 B. Liu
Intended status: Informational             Huawei Technologies Co., Ltd
Expires: January 14, 2013                                 B. Carpenter
                                                University of Auckland
                                                         July 16, 2012

      IPv6 Enterprise Network Renumbering Scenarios and Guidelines
                  draft-ietf-6renum-enterprise-01.txt

Status of this Memo

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   This Internet-Draft will expire on January 14, 2013.

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Jiang, et al.         Expires January 14, 2013                [Page 1]
Internet-Draft   draft-ietf-6renum-enterprise-00.txt         July 2012

Abstract

   This document analyzes enterprise renumbering events and describes
   the best current practice among the existing renumbering mechanisms.
   According to the different stages of renumbering events,
   considerations and best current practices are described in three
   categories: during network design, for preparation of renumbering,
   and during a renumbering operation.

Table of Contents

   1. Introduction ................................................. 3
   2. Enterprise Network Illustration for Renumbering .............. 3
   3. Enterprise Network Renumbering Scenario Categories ........... 4
      3.1. Renumbering caused by External Network Factors........... 5
      3.2. Renumbering caused by Internal Network Factors........... 5
   4. Network Renumbering Considerations and Best Current Practices. 5
      4.1. Considerations and Best Current Practices during Network
      Design ....................................................... 6
      4.2. Considerations and Best Current Practices for the Preparation
      of Renumbering ............................................... 9
      4.3. Considerations and Best Current Practices during Renumbering
      Operation ................................................... 10
   5. Security Considerations ..................................... 12
   6. IANA Considerations ......................................... 13
   7. Acknowledgements ............................................ 13
   8. Change Log [RFC Editor please remove] ....................... 13
   9. References .................................................. 13
      9.1. Normative References ................................... 13
      9.2. Informative References ................................. 14
   Author's Addresses ............................................. 16

Jiang, et al.             January 14, 2013                    [Page 2]
Internet-Draft   draft-ietf-6renum-enterprise-00.txt         July 2012

1. Introduction

   IPv6 site renumbering is considered difficult. Network managers
   currently prefer to use Provider Independent (PI) addressing for IPv6
   to attempt to minimize the need for future renumbering. However,
   widespread use of PI may create very serious BGP4 scaling problems
   and PI space is not always available for enterprise according to the
   RIR (Regional Internet Registry) policies. It is thus desirable to
   develop tools and practices that may make renumbering a simpler
   process to reduce demand for IPv6 PI space. In any case, renumbering
   may be necessary for other reasons.

   This document undertakes scenario descriptions, including
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