CoRE Discovery, Naming, and Addressing
draft-vanderstok-core-dna-01

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CoRE                                                P. van der Stok, Ed.
Internet-Draft                                          Philips Research
Intended status: Informational                                   K. Lynn
Expires: September 13, 2012                                   Consultant
                                                               A. Brandt
                                                           Sigma Designs
                                                          March 12, 2012

                 CoRE Discovery, Naming, and Addressing
                      draft-vanderstok-core-dna-01

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.
   Requirements on discovery are motivated.  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 13, 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
   (http://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

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   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 . . . . . . . . . . . . . . . . . . . . . . . . .  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  . . . . . . . . . . . . . . . . . . . . . . . 18
   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 21
   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 22
   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 22
   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 22
     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 22
     8.2.  Informative References . . . . . . . . . . . . . . . . . . 23
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 25

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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
   of DNS-SD [I-D.cheshire-dnsext-dns-sd] and Resource Directory (RD)
   [I-D.shelby-core-resource-directory] to satisfy the requirements.
   The proposal relies heavily on naming and addressing conventions.
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