datatracker.ietf.org
Sign in
Version 5.4.0, 2014-04-22
Report a bug

Miscellaneous CoAP Group Communication Topics
draft-dijk-core-groupcomm-misc-05

Document type: Active Internet-Draft (individual)
Document stream: No stream defined
Last updated: 2013-12-09
Intended RFC status: Unknown
Other versions: plain text, xml, pdf, html

Stream State:No stream defined
Document shepherd: No shepherd assigned

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

CoRE Working Group                                          E. Dijk, Ed.
Internet-Draft                                          Philips Research
Intended status: Informational                            A. Rahman, Ed.
Expires: June 12, 2014                  InterDigital Communications, LLC
                                                        December 9, 2013

             Miscellaneous CoAP Group Communication Topics
                   draft-dijk-core-groupcomm-misc-05

Abstract

   This document contains miscellaneous text around the topic of group
   communication for the Constrained Application Protocol (CoAP).  The
   first part contains, for reference, text that was removed from the WG
   version of Group Communication for CoAP draft.  The second part
   describes group communication and multicast functionality that may be
   input to future standardization in the CoRE WG.

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
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://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 June 12, 2014.

Copyright Notice

   Copyright (c) 2013 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
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Dijk & Rahman             Expires June 12, 2014                 [Page 1]
Internet-Draft   Miscellaneous CoAP Group Communication    December 2013

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

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Potential Solutions for Group Communication . . . . . . . . .   3
   3.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Background  . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  General Requirements  . . . . . . . . . . . . . . . . . .   5
     4.3.  Security Requirements . . . . . . . . . . . . . . . . . .   6
   5.  Group Communication Solutions . . . . . . . . . . . . . . . .   8
     5.1.  IP Multicast Transmission Methods . . . . . . . . . . . .   8
       5.1.1.  Serial unicast  . . . . . . . . . . . . . . . . . . .   8
       5.1.2.  Unreliable IP Multicast . . . . . . . . . . . . . . .   8
       5.1.3.  Reliable IP Multicast . . . . . . . . . . . . . . . .   8
     5.2.  Overlay Multicast . . . . . . . . . . . . . . . . . . . .   9
     5.3.  CoAP Application Layer Group Management . . . . . . . . .  10
   6.  DNS-SD Based Group Resource Manipulation  . . . . . . . . . .  12
   7.  Group Discovery and Member Discovery  . . . . . . . . . . . .  13
     7.1.  DNS-SD  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     7.2.  CoRE Resource Directory . . . . . . . . . . . . . . . . .  14
   8.  Deployment Guidelines . . . . . . . . . . . . . . . . . . . .  14
     8.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .  14
     8.2.  Implementation in Target Network Topologies . . . . . . .  14
       8.2.1.  Single LLN Topology . . . . . . . . . . . . . . . . .  15
       8.2.2.  Single LLN with Backbone Topology . . . . . . . . . .  17
       8.2.3.  Multiple LLNs with Backbone Topology  . . . . . . . .  19
       8.2.4.  LLN(s) with Multiple 6LBRs  . . . . . . . . . . . . .  19
       8.2.5.  Conclusions . . . . . . . . . . . . . . . . . . . . .  19
     8.3.  Implementation Considerations . . . . . . . . . . . . . .  19
       8.3.1.  MLD Implementation on LLNs and MLD alternatives . . .  20
       8.3.2.  6LBR Implementation . . . . . . . . . . . . . . . . .  21
       8.3.3.  Backbone IP Multicast Infrastructure  . . . . . . . .  21
   9.  Miscellaneous Topics  . . . . . . . . . . . . . . . . . . . .  22
     9.1.  CoAP Multicast and HTTP Unicast Interworking  . . . . . .  22
   10. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  23

[include full document text]