SLAP quadrant selection option for DHCPv6
draft-ietf-dhc-slap-quadrant-10

Document Type Active Internet-Draft (dhc WG)
Last updated 2020-08-03
Replaces draft-bernardos-dhc-slap-quadrant
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Stream WG state Submitted to IESG for Publication (wg milestone: Nov 2019 - WGLC SLAP quadrant s... )
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DHC WG                                                     CJ. Bernardos
Internet-Draft                                                      UC3M
Intended status: Standards Track                               A. Mourad
Expires: February 4, 2021                                   InterDigital
                                                          August 3, 2020

               SLAP quadrant selection option for DHCPv6
                    draft-ietf-dhc-slap-quadrant-10

Abstract

   IEEE originally structured the 48-bit MAC address space in such a way
   that half of it was reserved for local use.  In 2017, IEEE published
   a new standard (IEEE Std 802c) with a new optional "Structured Local
   Address Plan" (SLAP).  It specifies different assignment approaches
   in four specified regions of the local MAC address space.

   IEEE is developing protocols to assign addresses (IEEE P802.1CQ).
   There is work also in the IETF on specifying a new mechanism that
   extends DHCPv6 operation to handle the local MAC address assignments.

   This document proposes extensions to DHCPv6 protocols to enable a
   DHCPv6 client or a DHCPv6 relay to indicate a preferred SLAP quadrant
   to the server, so that the server may allocate MAC addresses in the
   quadrant requested by the relay or client.  A new DHCPv6 option
   (QUAD) is defined for this purpose.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on February 4, 2021.

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Copyright Notice

   Copyright (c) 2020 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
   (https://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
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   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Problem statement . . . . . . . . . . . . . . . . . . . .   4
       1.1.1.  WiFi (IEEE 802.11) devices  . . . . . . . . . . . . .   4
       1.1.2.  Hypervisor: migratable vs non-migratable functions  .   5
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  DHCPv6 Extensions . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Address Assignment from the Preferred SLAP Quadrant
           Indicated by the Client . . . . . . . . . . . . . . . . .   7
     3.2.  Address Assignment from the SLAP Quadrant Indicated by
           the Relay . . . . . . . . . . . . . . . . . . . . . . . .   9
   4.  DHCPv6 Option Definition  . . . . . . . . . . . . . . . . . .  11
     4.1.  Quad option . . . . . . . . . . . . . . . . . . . . . . .  11
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  14
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  14
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Appendix A.  Quadrant Selection Mechanisms examples . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  17

1.  Introduction

   IEEE structures the 48-bit MAC address space in such a way that half
   of it was reserved for local use (where the Universal/Local -- U/L --
   bit is set to 1).  In 2017, IEEE published a new standard (IEEE Std
   802c [IEEEStd802c]) which defines a new optional "Structured Local
   Address Plan" (SLAP) that specifies different assignment approaches
   in four specified regions of the local MAC address space.  These four
   regions, called SLAP quadrants, are briefly described below (see
   Figure 1 and Figure 2 for details):

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