CoRE Discovery, Naming, and Addressing
draft-vanderstok-core-dna-00

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CoRE                                                P. van der Stok, Ed.
Internet-Draft                                          Philips Research
Intended status: Informational                                   K. Lynn
Expires: September 1, 2012                                    Consultant
                                                               A. Brandt
                                                           Sigma Designs
                                                       February 29, 2012

                 CoRE Discovery, Naming, and Addressing
                      draft-vanderstok-core-dna-00

Abstract

   This is a working document intended to focus discussion and refine
   draft language for the CoAP protocol specification (or other proposed
   standards) in the areas of discovery, naming, and addressing.
   Engineering tradeoffs become more challenging in constrained
   environments; therefore discovery, naming, and addressing are
   considered within the context of adjacent topics that may impact or
   be impacted by design choices in the subject areas.  Special emphasis
   is placed on group definition and discovery.  Examples show how
   groups can be represented in CoAP Resource Directories or DNS-SD.

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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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on September 1, 2012.

Copyright Notice

   Copyright (c) 2012 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

van der Stok, et al.    Expires September 1, 2012               [Page 1]
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   (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 . . . . . . . . . . . . . . . . . . . . . . . . .  3
     1.1.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  3
     1.2.  Motivation . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.3.  Applicability  . . . . . . . . . . . . . . . . . . . . . .  5
   2.  Architecture . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Use Cases  . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1.  Discovery scope  . . . . . . . . . . . . . . . . . . . . .  6
     3.2.  Interactive mapping  . . . . . . . . . . . . . . . . . . .  6
     3.3.  M2M mapping  . . . . . . . . . . . . . . . . . . . . . . .  7
     3.4.  Function Set grouping  . . . . . . . . . . . . . . . . . .  7
     3.5.  Discovery queries  . . . . . . . . . . . . . . . . . . . . 10
     3.6.  Sleeping devices . . . . . . . . . . . . . . . . . . . . . 11
   4.  DNS and RD examples  . . . . . . . . . . . . . . . . . . . . . 12
     4.1.  DNS-SD examples  . . . . . . . . . . . . . . . . . . . . . 12
     4.2.  RD examples  . . . . . . . . . . . . . . . . . . . . . . . 17
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 20
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 21
   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 21
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 21
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 21
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 22
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 23

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1.  Introduction

   The CoRE working group is chartered to design and standardize a
   Constrained Application Protocol (CoAP) for resource constrained
   devices and networks [I-D.ietf-core-coap].  The requirements for CoRE
   are documented in [I-D.shelby-core-coap-req].  This draft discusses
   the requirements on service discovery for M2M and interactive
   applications using resource constrained devices.  We propose the use
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