Internet Engineering Task Force (IETF)                         A. Retana
Request for Comments: 6969                           Cisco Systems, Inc.
Updates: 5838                                                   D. Cheng
Category: Standards Track                            Huawei Technologies
ISSN: 2070-1721                                                July 2013


                  OSPFv3 Instance ID Registry Update

Abstract

  This document modifies the "Unassigned" number space in the IANA
  "OSPFv3 Instance ID Address Family Values" registry by dividing it in
  two halves -- one half Unassigned but managed via Standards Action,
  and the other Reserved for Private Use.  It updates RFC 5838.

Status of This Memo

  This is an Internet Standards Track document.

  This document is a product of the Internet Engineering Task Force
  (IETF).  It represents the consensus of the IETF community.  It has
  received public review and has been approved for publication by the
  Internet Engineering Steering Group (IESG).  Further information on
  Internet Standards is available in Section 2 of RFC 5741.

  Information about the current status of this document, any errata,
  and how to provide feedback on it may be obtained at
  http://www.rfc-editor.org/info/rfc6969.

Copyright Notice

  Copyright (c) 2013 IETF Trust and the persons identified as the
  document authors.  All rights reserved.

  This document is subject to BCP 78 and the IETF Trust's Legal
  Provisions Relating to IETF Documents
  (http://trustee.ietf.org/license-info) in effect on the date of
  publication of this document.  Please review these documents
  carefully, as they describe your rights and restrictions with respect
  to this document.  Code Components extracted from this document must
  include Simplified BSD License text as described in Section 4.e of
  the Trust Legal Provisions and are provided without warranty as
  described in the Simplified BSD License.







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Table of Contents

  1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
  2.  OSPFv3 Instance ID Address Family Values Registry Update  . . . 3
  3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
  4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 3
  5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 3
  6.  References  . . . . . . . . . . . . . . . . . . . . . . . . . . 4
    6.1.  Normative References  . . . . . . . . . . . . . . . . . . . 4
    6.2.  Informative References  . . . . . . . . . . . . . . . . . . 4

1.  Introduction

  [RFC5838] defined the "OSPFv3 Instance ID Address Family Values"
  registry for the purpose of mapping OSPFv3 Instance IDs to different
  address families.  The following table lists the value ranges that
  were allocated for [RFC5838] and Unassigned.

  +---------+---------------------------------------------+-----------+
  | Value   | Description                                 | Reference |
  +---------+---------------------------------------------+-----------+
  | 0       | IPv6 unicast AF                             | [RFC5838] |
  | 1 - 31  | Base IPv6 Unicast AF dependent on local     | [RFC5838] |
  |         | policy                                      |           |
  | 32      | Base IPv6 Multicast                         | [RFC5838] |
  | 33-63   | IPv6 Multicast AFs dependent on local       | [RFC5838] |
  |         | policy                                      |           |
  | 64      | Base IPv4 Unicast AF                        | [RFC5838] |
  | 65-95   | IPv4 Unicast AFs dependent on local policy  | [RFC5838] |
  | 96      | Base IPv4 Multicast                         | [RFC5838] |
  | 97-127  | IPv4 Multicast AFs dependent on local       | [RFC5838] |
  |         | policy                                      |           |
  | 128-255 | Unassigned                                  | [RFC5838] |
  +---------+---------------------------------------------+-----------+

  In some networks, additional OSPFv3 instances may be required to
  operationally identify specific applications.  This need requires a
  pool of Instance IDs that the operator may locally assign for that
  purpose.

  For example, [OSPF-EMBED] describes an application in which IPv4-
  embedded IPv6 addresses [RFC6052] are used to transport IPv4 packets
  over an IPv6 network.  While the IPv4-embedded IPv6 addresses do in
  fact represent IPv6 destinations, it would be operationally
  beneficial to be able to easily identify the specific application by
  having a separate space to do so.  This benefit is enabled by the
  allocation of a range of Private Use Instance IDs.




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RFC 6969           OSPFv3 Instance ID Registry Update          July 2013


  This document modifies the IANA "OSPFv3 Instance ID Address Family
  Values" registry by designating a range as Reserved for Private Use.
  For the remaining unassigned values, the registration procedure is
  Standards Action.

2.  OSPFv3 Instance ID Address Family Values Registry Update

  The IANA "OSPFv3 Instance ID Address Family Values" registry has been
  updated so that Instance IDs from 192-255 are Reserved for Private
  Use [RFC5226].  For the remaining unassigned values (128-191), the
  registration procedure is Standards Action.  The registry now shows:

  +--------------------------+---------------+-----------------------+
  | Value                    | Description   | Reference             |
  +--------------------------+---------------+-----------------------+
  | 128-191                  | Unassigned    | 192-255               |
  | Reserved for Private Use | this document | Private Use [RFC5226] |
  +--------------------------+---------------+-----------------------+

3.  IANA Considerations

  This document requests the modification of the "OSPFv3 Instance ID
  Address Family Values" registry as described in Section 2.  The
  reference to [RFC5838] has been removed from the registry for the
  modified ranges.

4.  Security Considerations

  This document modifies an IANA registry defined in [RFC5838].  It
  does not introduce any new security issues.

5.  Acknowledgements

  Many thanks to Acee Lindem, Stewart Bryant, Nevil Brownlee, Pearl
  Liang, Ben Campbell, Adrian Farrel, and Richard Barnes for their
  review and input.















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6.  References

6.1.  Normative References

  [RFC5226]     Narten, T. and H. Alvestrand, "Guidelines for Writing
                an IANA Considerations Section in RFCs", BCP 26,
                RFC 5226, May 2008.

6.2.  Informative References

  [OSPF-EMBED]  Cheng, D., Boucadair, M., and A. Retana, "Routing for
                IPv4-embedded IPv6 Packets", Work in Progress,
                June 2013.

  [RFC5838]     Lindem, A., Mirtorabi, S., Roy, A., Barnes, M., and R.
                Aggarwal, "Support of Address Families in OSPFv3",
                RFC 5838, April 2010.

  [RFC6052]     Bao, C., Huitema, C., Bagnulo, M., Boucadair, M., and
                X. Li, "IPv6 Addressing of IPv4/IPv6 Translators",
                RFC 6052, October 2010.

Authors' Addresses

  Alvaro Retana
  Cisco Systems, Inc.
  7025 Kit Creek Rd.
  Research Triangle Park, NC  27709
  USA

  EMail: [email protected]


  Dean Cheng
  Huawei Technologies
  2330 Central Expressway
  Santa Clara, California  95050
  USA

  EMail: [email protected]











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