IPv6 Backbone Router
draft-ietf-6lo-backbone-router-04

Document Type Active Internet-Draft (6lo WG)
Last updated 2017-07-17
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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     cisco
Intended status: Standards Track                           July 17, 2017
Expires: January 18, 2018

                          IPv6 Backbone Router
                   draft-ietf-6lo-backbone-router-04

Abstract

   This specification proposes an update to IPv6 Neighbor Discovery, to
   enhance the operation of IPv6 over wireless links that exhibit lossy
   multicast support, and enable a large degree of scalability by
   splitting the broadcast domains.  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
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   This Internet-Draft will expire on January 18, 2018.

Copyright Notice

   Copyright (c) 2017 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

Thubert                 Expires January 18, 2018                [Page 1]
Internet-Draft            IPv6 Backbone Router                 July 2017

   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   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]
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