Network Working Group T. Chown, Ed.
Internet-Draft University of Southampton
Intended status: Informational J. Arkko
Expires: November 22, 2013 Ericsson
A. Brandt
Sigma Designs
O. Troan
Cisco Systems, Inc.
J. Weil
Time Warner Cable
May 21, 2013
Home Networking Architecture for IPv6
draft-ietf-homenet-arch-08
Abstract
This text describes evolving networking technology within
increasingly large residential home networks. The goal of this
document is to define a general architecture for IPv6-based home
networking, describing the associated principles, considerations and
requirements. The text briefly highlights specific implications of
the introduction of IPv6 for home networking, discusses the elements
of the architecture, and suggests how standard IPv6 mechanisms and
addressing can be employed in home networking. The architecture
describes the need for specific protocol extensions for certain
additional functionality. It is assumed that the IPv6 home network
is not actively managed, and runs as an IPv6-only or dual-stack
network. There are no recommendations in this text for the IPv4 part
of the network.
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 November 22, 2013.
Chown, et al. Expires November 22, 2013 [Page 1]
Internet-Draft IPv6 Home Networking May 2013
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
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. Terminology and Abbreviations . . . . . . . . . . . . . . 5
2. Effects of IPv6 on Home Networking . . . . . . . . . . . . . . 6
2.1. Multiple subnets and routers . . . . . . . . . . . . . . . 7
2.2. Global addressability and elimination of NAT . . . . . . . 8
2.3. Multi-Addressing of devices . . . . . . . . . . . . . . . 8
2.4. Unique Local Addresses (ULAs) . . . . . . . . . . . . . . 9
2.5. Avoiding manual configuration of IP addresses . . . . . . 10
2.6. IPv6-only operation . . . . . . . . . . . . . . . . . . . 10
3. Homenet Architecture . . . . . . . . . . . . . . . . . . . . . 11
3.1. General Principles . . . . . . . . . . . . . . . . . . . . 12
3.1.1. Reuse existing protocols . . . . . . . . . . . . . . . 12
3.1.2. Minimise changes to hosts and routers . . . . . . . . 12
3.2. Homenet Topology . . . . . . . . . . . . . . . . . . . . . 12
3.2.1. Supporting arbitrary topologies . . . . . . . . . . . 13
3.2.2. Network topology models . . . . . . . . . . . . . . . 13
3.2.3. Dual-stack topologies . . . . . . . . . . . . . . . . 17
3.2.4. Multihoming . . . . . . . . . . . . . . . . . . . . . 18
3.3. A Self-Organising Network . . . . . . . . . . . . . . . . 19
3.3.1. Differentiating neighbouring homenets . . . . . . . . 20
3.3.2. Largest practical subnets . . . . . . . . . . . . . . 20
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