IPv6 Backbone Router
draft-ietf-6lo-backbone-router-05

Document Type Active Internet-Draft (6lo WG)
Last updated 2018-01-09
Stream IETF
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream WG state WG Document
Document shepherd Samita Chakrabarti
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to "Samita Chakrabarti" <samitac.ietf@gmail.com>
6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     cisco
Intended status: Standards Track                         January 9, 2018
Expires: July 13, 2018

                          IPv6 Backbone Router
                   draft-ietf-6lo-backbone-router-05

Abstract

   This specification proposes proxy operations for IPv6 Neighbor
   Discovery on behalf of devices located on broadcast-inefficient
   wireless networks.  A broadcast-efficient backbone running classical
   IPv6 Neighbor Discovery federates multiple wireless links to form a
   large MultiLink Subnet, but the broadcast domain does not need to
   extend to the wireless links for the purpose of ND operation.
   Backbone Routers placed at the wireless edge of the backbone proxy
   the ND operation and route packets from/to registered nodes, and
   wireless nodes register or are proxy-registered to the Backbone
   Router to setup proxy services in a fashion that is essentially
   similar to a classical Layer-2 association.

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 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 July 13, 2018.

Copyright Notice

   Copyright (c) 2018 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

Thubert                   Expires July 13, 2018                 [Page 1]
Internet-Draft            IPv6 Backbone Router              January 2018

   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
   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
   2.  Applicability and Requirements Served . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
   5.  Backbone Router Routing Operations  . . . . . . . . . . . . .   9
     5.1.  Over the Backbone Link  . . . . . . . . . . . . . . . . .  10
     5.2.  Over the LLN Link . . . . . . . . . . . . . . . . . . . .  11
   6.  BackBone Router Proxy Operations  . . . . . . . . . . . . . .  13
     6.1.  Registration and Binding State Creation . . . . . . . . .  15
     6.2.  Defending Addresses . . . . . . . . . . . . . . . . . . .  16
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  18
   8.  Protocol Constants  . . . . . . . . . . . . . . . . . . . . .  18
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  18
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     11.2.  Informative References . . . . . . . . . . . . . . . . .  20
     11.3.  External Informative References  . . . . . . . . . . . .  23
   Appendix A.  Requirements . . . . . . . . . . . . . . . . . . . .  24
     A.1.  Requirements Related to Mobility  . . . . . . . . . . . .  24
     A.2.  Requirements Related to Routing Protocols . . . . . . . .  25
     A.3.  Requirements Related to the Variety of Low-Power Link
           types . . . . . . . . . . . . . . . . . . . . . . . . . .  26
     A.4.  Requirements Related to Proxy Operations  . . . . . . . .  26
     A.5.  Requirements Related to Security  . . . . . . . . . . . .  27
     A.6.  Requirements Related to Scalability . . . . . . . . . . .  28
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  29

1.  Introduction

   One of the key services provided by IEEE std. 802.1 [IEEEstd8021]
   Ethernet Bridging is an efficient and reliable broadcast service, and
   multiple applications and protocols have been built that heavily
   depend on that feature for their core operation.  But a wide range of
   wireless networks do not provide the solid and cheap broadcast
Show full document text