IPv6 Backbone Router
draft-ietf-6lo-backbone-router-11

Document Type Active Internet-Draft (6lo WG)
Last updated 2019-07-10 (latest revision 2019-02-04)
Stream IETF
Intended RFC status (None)
Formats plain text xml pdf html bibtex
Stream WG state In WG Last Call
Document shepherd Shwetha Bhandari
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to "Samita Chakrabarti" <samitac.ietf@gmail.com>, Carles Gomez <carlesgo@entel.upc.edu>, Shwetha Bhandari <shwethab@cisco.com>
6lo                                                      P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Updates: 6775, 8505 (if approved)                             C. Perkins
Intended status: Standards Track                               Futurewei
Expires: August 8, 2019                                 E. Levy-Abegnoli
                                                           Cisco Systems
                                                        February 4, 2019

                          IPv6 Backbone Router
                   draft-ietf-6lo-backbone-router-11

Abstract

   This document updates RFC 4861 and RFC 8505 in order to enable proxy
   services for IPv6 Neighbor Discovery by Routing Registrars called
   Backbone Routers.  Backbone Routers are placed along the wireless
   edge of a Backbone, and federate multiple wireless links to form a
   single MultiLink Subnet.

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 August 8, 2019.

Copyright Notice

   Copyright (c) 2019 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
   to this document.  Code Components extracted from this document must

Thubert, et al.          Expires August 8, 2019                 [Page 1]
Internet-Draft            IPv6 Backbone Router             February 2019

   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  New Terms . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  Acronym Definitions . . . . . . . . . . . . . . . . . . .   6
     2.4.  References  . . . . . . . . . . . . . . . . . . . . . . .   7
   3.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Updating RFC 6775 and RFC 8505  . . . . . . . . . . . . .   9
     3.2.  Access Link . . . . . . . . . . . . . . . . . . . . . . .  10
     3.3.  Route-Over Mesh . . . . . . . . . . . . . . . . . . . . .  11
     3.4.  The Binding Table . . . . . . . . . . . . . . . . . . . .  12
     3.5.  Primary and Secondary 6BBRs . . . . . . . . . . . . . . .  13
     3.6.  Using Optimistic DAD  . . . . . . . . . . . . . . . . . .  14
   4.  MultiLink Subnet Considerations . . . . . . . . . . . . . . .  14
   5.  Optional 6LBR serving the MultiLink Subnet  . . . . . . . . .  15
   6.  Using IPv6 ND Over the Backbone Link  . . . . . . . . . . . .  15
   7.  Routing Proxy Operations  . . . . . . . . . . . . . . . . . .  16
   8.  Bridging Proxy Operations . . . . . . . . . . . . . . . . . .  17
   9.  Creating and Maintaining a Binding  . . . . . . . . . . . . .  18
     9.1.  Operation on a Binding in Tentative State . . . . . . . .  19
     9.2.  Operation on a Binding in Reachable State . . . . . . . .  20
     9.3.  Operation on a Binding in Stale State . . . . . . . . . .  21
   10. Registering Node Considerations . . . . . . . . . . . . . . .  22
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  23
   12. Protocol Constants  . . . . . . . . . . . . . . . . . . . . .  23
   13. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  23
   14. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  23
   15. References  . . . . . . . . . . . . . . . . . . . . . . . . .  24
     15.1.  Normative References . . . . . . . . . . . . . . . . . .  24
     15.2.  Informative References . . . . . . . . . . . . . . . . .  25
   Appendix A.  Possible Future Extensions . . . . . . . . . . . . .  28
   Appendix B.  Applicability and Requirements Served  . . . . . . .  28
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  30

1.  Introduction

   IEEE STD. 802.1 [IEEEstd8021] Ethernet Bridging provides an efficient
Show full document text