IPv6 Backbone Router
draft-ietf-6lo-backbone-router-09

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6lo                                                      P. Thubert, Ed.
Internet-Draft                                             Cisco Systems
Updates: 4861, 8505 (if approved)                             C. Perkins
Intended status: Standards Track                               Futurewei
Expires: June 8, 2019                                   E. Levy-Abegnoli
                                                           Cisco Systems
                                                        December 5, 2018

                          IPv6 Backbone Router
                   draft-ietf-6lo-backbone-router-09

Abstract

   Backbone Routers are RFC8505 Routing Registrars that provide proxy
   services for IPv6 Neighbor Discovery.  Backbone Routers federate
   multiple wireless Links over a Backbone Link to form a MultiLink
   Subnet.  Backbone Routers placed along the wireless edge of the
   Backbone handle IPv6 Neighbor Discovery, and route packets on behalf
   of registered nodes.

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
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   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 June 8, 2019.

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
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect

Thubert, et al.           Expires June 8, 2019                  [Page 1]
Internet-Draft            IPv6 Backbone Router             December 2018

   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  References  . . . . . . . . . . . . . . . . . . . . . . .   5
     2.3.  New Terms . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.4.  Acronym Definitions . . . . . . . . . . . . . . . . . . .   6
   3.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Access Link . . . . . . . . . . . . . . . . . . . . . . .   9
     3.2.  Route-Over Mesh . . . . . . . . . . . . . . . . . . . . .  10
     3.3.  MultiLink Subnet Consistency  . . . . . . . . . . . . . .  11
     3.4.  Registering Node  . . . . . . . . . . . . . . . . . . . .  11
     3.5.  Using IPv6 ND Over the Backbone Link  . . . . . . . . . .  12
     3.6.  Routing Proxy Operations  . . . . . . . . . . . . . . . .  13
     3.7.  Bridging Proxy Operations . . . . . . . . . . . . . . . .  14
     3.8.  Leveraging Optimistic DAD . . . . . . . . . . . . . . . .  14
   4.  Updating RFC 4861 . . . . . . . . . . . . . . . . . . . . . .  15
   5.  Updating RFC 8505 . . . . . . . . . . . . . . . . . . . . . .  15
   6.  6BBR detailed Operations  . . . . . . . . . . . . . . . . . .  15
     6.1.  Primary and Secondary  6BBRs  . . . . . . . . . . . . . .  16
     6.2.  Binding Table . . . . . . . . . . . . . . . . . . . . . .  16
     6.3.  Registration and Binding Table Entry Creation . . . . . .  17
     6.4.  Defending Addresses . . . . . . . . . . . . . . . . . . .  18
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  20
   8.  Protocol Constants  . . . . . . . . . . . . . . . . . . . . .  20
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  20
   10. Future Work . . . . . . . . . . . . . . . . . . . . . . . . .  20
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  20
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  21
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  21
     12.2.  Informative References . . . . . . . . . . . . . . . . .  22
     12.3.  External Informative References  . . . . . . . . . . . .  24
   Appendix A.  Applicability and Requirements Served  . . . . . . .  25
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  26

1.  Introduction