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Basic Requirements for IPv6 Customer Edge Routers
RFC 6204

Internet Engineering Task Force (IETF)                          H. Singh
Request for Comments: 6204                                     W. Beebee
Category: Informational                              Cisco Systems, Inc.
ISSN: 2070-1721                                                C. Donley
                                                               CableLabs
                                                                B. Stark
                                                                    AT&T
                                                           O. Troan, Ed.
                                                     Cisco Systems, Inc.
                                                              April 2011

           Basic Requirements for IPv6 Customer Edge Routers

Abstract

   This document specifies requirements for an IPv6 Customer Edge (CE)
   router.  Specifically, the current version of this document focuses
   on the basic provisioning of an IPv6 CE router and the provisioning
   of IPv6 hosts attached to it.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see 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/rfc6204.

Copyright Notice

   Copyright (c) 2011 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

Singh, et al.                 Informational                     [Page 1]
RFC 6204               IPv6 CE Router Requirements            April 2011

   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 ......................................3
   2. Terminology .....................................................3
   3. Architecture ....................................................4
      3.1. Current IPv4 End-User Network Architecture .................4
      3.2. IPv6 End-User Network Architecture .........................4
           3.2.1. Local Communication .................................6
   4. Requirements ....................................................6
      4.1. General Requirements .......................................6
      4.2. WAN-Side Configuration .....................................7
      4.3. LAN-Side Configuration ....................................11
      4.4. Security Considerations ...................................13
   5. Acknowledgements ...............................................13
   6. Contributors ...................................................14
   7. References .....................................................14
      7.1. Normative References ......................................14
      7.2. Informative References ....................................16

1.  Introduction

   This document defines basic IPv6 features for a residential or small-
   office router, referred to as an IPv6 CE router.  Typically, these
   routers also support IPv4.

   Mixed environments of dual-stack hosts and IPv6-only hosts (behind
   the CE router) can be more complex if the IPv6-only devices are using
   a translator to access IPv4 servers [RFC6144].  Support for such
   mixed environments is not in scope of this document.

   This document specifies how an IPv6 CE router automatically
   provisions its WAN interface, acquires address space for provisioning
   of its LAN interfaces, and fetches other configuration information
   from the service provider network.  Automatic provisioning of more
   complex topology than a single router with multiple LAN interfaces is
   out of scope for this document.

   See [RFC4779] for a discussion of options available for deploying
   IPv6 in service provider access networks.

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