An Update to 6LoWPAN ND
draft-ietf-6lo-rfc6775-update-04

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Document Type Active Internet-Draft (6lo WG)
Last updated 2017-05-01
Replaces draft-thubert-6lo-rfc6775-update
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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     cisco
Updates: 6775 (if approved)                                  E. Nordmark
Intended status: Standards Track
Expires: November 2, 2017                                 S. Chakrabarti
                                                             May 1, 2017

                        An Update to 6LoWPAN ND
                    draft-ietf-6lo-rfc6775-update-04

Abstract

   This specification updates RFC 6775 - 6LoWPAN Neighbor Discovery, to
   clarify the role of the protocol as a registration technique,
   simplify the registration operation in 6LoWPAN routers, and provide
   enhancements to the registration capabilities, in particular for the
   registration to a Backbone Router for proxy ND operations.

Status of This Memo

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   This Internet-Draft will expire on November 2, 2017.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Thubert, et al.         Expires November 2, 2017                [Page 1]
Internet-Draft           An Update to 6LoWPAN ND                May 2017

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Considerations On Registration Rejection  . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Extending RFC 7400  . . . . . . . . . . . . . . . . . . . . .   5
   5.  Updating RFC 6775 . . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  Extended Address Registration Option  . . . . . . . . . .   6
     5.2.  Transaction ID  . . . . . . . . . . . . . . . . . . . . .   6
     5.3.  Owner Unique ID . . . . . . . . . . . . . . . . . . . . .   7
     5.4.  Registering the Target Address  . . . . . . . . . . . . .   8
     5.5.  Link-Local Addresses and Registration . . . . . . . . . .   8
     5.6.  Maintaining the Registration States . . . . . . . . . . .  10
   6.  Updated ND Options  . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  New 6LoWPAN capability Bits in the Capability Indication
           Option  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  The Enhanced Address Registration Option (EARO) . . . . .  12
   7.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .  14
     7.1.  Discovering the capabilities of an ND peer  . . . . . . .  14
       7.1.1.  Using the E Flag in the CIO . . . . . . . . . . . . .  14
       7.1.2.  Using the T Flag in the EARO  . . . . . . . . . . . .  15
     7.2.  Legacy 6LoWPAN Node . . . . . . . . . . . . . . . . . . .  15
     7.3.  Legacy 6LoWPAN Router . . . . . . . . . . . . . . . . . .  16
     7.4.  Legacy 6LoWPAN Border Router  . . . . . . . . . . . . . .  16
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  19
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  20
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  20
     11.2.  Informative References . . . . . . . . . . . . . . . . .  21
     11.3.  External Informative References  . . . . . . . . . . . .  23
   Appendix A.  Applicability and Requirements Served  . . . . . . .  24
   Appendix B.  Requirements . . . . . . . . . . . . . . . . . . . .  24
     B.1.  Requirements Related to Mobility  . . . . . . . . . . . .  25
     B.2.  Requirements Related to Routing Protocols . . . . . . . .  25
     B.3.  Requirements Related to the Variety of Low-Power Link
           types . . . . . . . . . . . . . . . . . . . . . . . . . .  26
     B.4.  Requirements Related to Proxy Operations  . . . . . . . .  27
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