CoRE Resource Directory
draft-ietf-core-resource-directory-27

Document Type Active Internet-Draft (core WG)
Authors Christian Amsüss  , Zach Shelby  , Michael Koster  , Carsten Bormann  , Peter Van der Stok 
Last updated 2021-02-22
Replaces draft-shelby-core-resource-directory
Stream Internent Engineering Task Force (IETF)
Intended RFC status Proposed Standard
Formats plain text html xml pdf htmlized (tools) htmlized bibtex
Reviews
Additional Resources
- Working Group Repo
- Mailing list discussion
Stream WG state Submitted to IESG for Publication
Document shepherd Jaime Jimenez
Shepherd write-up Show (last changed 2020-08-17)
IESG IESG state Approved-announcement to be sent::AD Followup
Action Holders
(None)
Consensus Boilerplate Yes
Telechat date
Responsible AD Barry Leiba
Send notices to jaime@iki.fi
IANA IANA review state Version Changed - Review Needed
IANA expert review state Expert Reviews OK
CoRE                                                      C. Amsüss, Ed.
Internet-Draft                                                          
Intended status: Standards Track                               Z. Shelby
Expires: 26 August 2021                                              ARM
                                                               M. Koster
                                                             SmartThings
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                         P. van der Stok
                                                              consultant
                                                        22 February 2021

                        CoRE Resource Directory
                 draft-ietf-core-resource-directory-27

Abstract

   In many IoT applications, direct discovery of resources is not
   practical due to sleeping nodes, or networks where multicast traffic
   is inefficient.  These problems can be solved by employing an entity
   called a Resource Directory (RD), which contains information about
   resources held on other servers, allowing lookups to be performed for
   those resources.  The input to an RD is composed of links and the
   output is composed of links constructed from the information stored
   in the RD.  This document specifies the web interfaces that an RD
   supports for web servers to discover the RD and to register,
   maintain, lookup and remove information on resources.  Furthermore,
   new target attributes useful in conjunction with an RD are defined.

Note to Readers

   Discussion of this document takes place on the CORE Working Group
   mailing list (core@ietf.org), which is archived at
   https://mailarchive.ietf.org/arch/browse/core/
   (https://mailarchive.ietf.org/arch/browse/core/).

   Source for this draft and an issue tracker can be found at
   https://github.com/core-wg/resource-directory (https://github.com/
   core-wg/resource-directory).

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

Amsüss, et al.           Expires 26 August 2021                 [Page 1]
Internet-Draft           CoRE Resource Directory           February 2021

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   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 26 August 2021.

Copyright Notice

   Copyright (c) 2021 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 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  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Architecture and Use Cases  . . . . . . . . . . . . . . . . .   6
     3.1.  Principles  . . . . . . . . . . . . . . . . . . . . . . .   7
     3.2.  Architecture  . . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  RD Content Model  . . . . . . . . . . . . . . . . . . . .   8
     3.4.  Link-local addresses and zone identifiers . . . . . . . .  12
     3.5.  Use Case: Cellular M2M  . . . . . . . . . . . . . . . . .  12
     3.6.  Use Case: Home and Building Automation  . . . . . . . . .  13
     3.7.  Use Case: Link Catalogues . . . . . . . . . . . . . . . .  14
   4.  RD discovery and other interface-independent components . . .  14
     4.1.  Finding a Resource Directory  . . . . . . . . . . . . . .  15
       4.1.1.  Resource Directory Address Option (RDAO)  . . . . . .  17
       4.1.2.  Using DNS-SD to discover a Resource Directory . . . .  19
     4.2.  Payload Content Formats . . . . . . . . . . . . . . . . .  19
     4.3.  URI Discovery . . . . . . . . . . . . . . . . . . . . . .  19
   5.  Registration  . . . . . . . . . . . . . . . . . . . . . . . .  22
     5.1.  Simple Registration . . . . . . . . . . . . . . . . . . .  26
Show full document text