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Customer Edge Router Identification Option
draft-donley-dhc-cer-id-option-03

Document type: Active Internet-Draft (individual)
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Last updated: 2014-02-14
Intended RFC status: Unknown
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Network Working Group                                          C. Donley
Internet-Draft                                             M. Kloberdans
Intended status: Informational                                 CableLabs
Expires: August 18, 2014                                   J. Brzozowski
                                                                 Comcast
                                                           C. Grundemann
                                                                    ISOC
                                                       February 14, 2014

               Customer Edge Router Identification Option
                   draft-donley-dhc-cer-id-option-03

Abstract

   Addressing mechanisms supporting DHCPv6 Prefix Delegation in home
   networks such as those described in CableLabs' eRouter specification
   and the HIPnet Internet-Draft require identification of the customer
   edge router (CER) as the demarcation between the customer network and
   the service provider network.  This document reserves a DHCPv6 option
   to identify the CER.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://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 August 18, 2014.

Copyright Notice

   Copyright (c) 2014 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

Donley, et al.           Expires August 18, 2014                [Page 1]
Internet-Draft                cer-id-option                February 2014

   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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   2
   2.  CER Identification Option . . . . . . . . . . . . . . . . . .   2
   3.  Authentication  . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Null Authentication . . . . . . . . . . . . . . . . . . .   4
     3.2.  Simple Password Authentication  . . . . . . . . . . . . .   4
     3.3.  Cryptographic Authentication  . . . . . . . . . . . . . .   5
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   6
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   6
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   6

1.  Introduction

   Some addressing mechanisms supporting DHCPv6 Prefix Delegation in
   home networks such as those described in [I-D.grundemann-hipnet] and
   [EROUTER] require identification of the customer edge router as the
   demarcation between the customer network and the service provider
   network.  For prefix delegation purposes, it is desirable for other
   routers within the home to know which device is the CER so that the
   customer nome network only requests a single prefix from the ISP
   DHCPv6 server, and efficiently distributes this prefix within the
   home.  This document reserves a DHCPv6 option to be used to identify
   the CER.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

2.  CER Identification Option

   A Customer Edge Router (CER) sets the CER_ID to the IPv6 address of

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