DHCPv6 class based prefix
draft-bhandari-dhc-class-based-prefix-02

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Last updated 2012-07-15
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Internet Engineering Task Force                              S. Bhandari
Internet-Draft                                               G. Halwasia
Intended status: Standards Track                                S. Bandi
Expires: January 17, 2013                                  S. Gundavelli
                                                           Cisco Systems
                                                                 H. Deng
                                                            China Mobile
                                                             L. Thiebaut
                                                          Alcatel-Lucent
                                                           July 16, 2012

                       DHCPv6 class based prefix
                draft-bhandari-dhc-class-based-prefix-02

Abstract

   DHCPv6 defines class based allocation of IA_NA and IA_TA IPv6
   addresses.  This document extends DHCPv6 prefix delegation with class
   based prefix allocation.  It defines a new usage class option to
   classify a prefix.  It defines the behavior of a DHCPv6 client
   requesting a prefix to include the class of the prefix to be
   allocated and the DHCPv6 server behavior to select and offer a prefix
   from a given class.  It discusses how IA_NA can be requested and
   assigned from a specific usage class.

Status of this Memo

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   This Internet-Draft will expire on January 17, 2013.

Copyright Notice

   Copyright (c) 2012 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Bhandari, et al.        Expires January 17, 2013                [Page 1]
Internet-Draft          DHCPv6 class based prefix              July 2012

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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Motivation . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  4
     1.3.  Requirements Language  . . . . . . . . . . . . . . . . . .  4
   2.  Overview . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
     2.1.  Usage Class Option . . . . . . . . . . . . . . . . . . . .  4
     2.2.  Consideration for different DHCPv6 entities  . . . . . . .  6
       2.2.1.  Requesting Router Behavior . . . . . . . . . . . . . .  6
       2.2.2.  Delegating Router Behavior . . . . . . . . . . . . . .  7
       2.2.3.  DHCPv6 Client Behavior for IA_NA allocation  . . . . .  7
     2.3.  Usage  . . . . . . . . . . . . . . . . . . . . . . . . . .  8
       2.3.1.  OPTION_USAGE_CLASS Values  . . . . . . . . . . . . . .  8
       2.3.2.  Class based prefix and IA_NA allocation  . . . . . . .  8
       2.3.3.  Class based prefix and IA_PD allocation  . . . . . . .  9
       2.3.4.  Class based prefix and SLAAC . . . . . . . . . . . . .  9
       2.3.5.  Class based prefix and applications  . . . . . . . . .  9
   3.  Example Application  . . . . . . . . . . . . . . . . . . . . .  9
     3.1.  Class based prefix delegation  . . . . . . . . . . . . . . 12
     3.2.  IPv6 address assignment from class based prefix  . . . . . 12
   4.  Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 13
     5.1.  OPTION_USAGE_CLASS values  . . . . . . . . . . . . . . . . 13
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 14
   7.  Change History (to be removed prior to publication as an
       RFC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 14
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 15
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 15
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