Minimal 6TiSCH Configuration
draft-ietf-6tisch-minimal-21

Document Type Active Internet-Draft (6tisch WG)
Last updated 2017-03-22 (latest revision 2017-02-20)
Replaces draft-vilajosana-6tisch-minimal
Stream IETF
Intended RFC status Best Current Practice
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Stream WG state Submitted to IESG for Publication (wg milestone: Apr 2016 - Second submission of... )
Document shepherd Pascal Thubert
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6TiSCH                                                X. Vilajosana, Ed.
Internet-Draft                           Universitat Oberta de Catalunya
Intended status: Best Current Practice                         K. Pister
Expires: August 24, 2017               University of California Berkeley
                                                             T. Watteyne
                                                       Linear Technology
                                                       February 20, 2017

                      Minimal 6TiSCH Configuration
                      draft-ietf-6tisch-minimal-21

Abstract

   This document describes a minimal mode of operation for an IPv6 over
   the TSCH mode of IEEE 802.15.4e (6TiSCH) Network.  This minimal mode
   of operation specifies the baseline set of protocols that need to be
   supported, recommended configurations and modes of operation
   sufficient to enable a 6TiSCH functional network.  6TiSCH provides
   IPv6 connectivity over a Time Synchronized Channel Hopping (TSCH)
   mesh composed of IEEE Std 802.15.4 TSCH links.  This minimal mode
   uses a collection of protocols with the respective configurations,
   including the 6LoWPAN framework, enabling interoperable IPv6
   connectivity over IEEE Std 802.15.4 TSCH.  This minimal configuration
   provides the necessary bandwidth for network and security bootstrap,
   and defines the proper link between the IETF protocols that interface
   to IEEE Std 802.15.4 TSCH.  This minimal mode of operation should be
   implemented by all 6TiSCH compliant devices.

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 August 24, 2017.

Vilajosana, et al.       Expires August 24, 2017                [Page 1]
Internet-Draft               6tisch-minimal                February 2017

Copyright Notice

   Copyright (c) 2017 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
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  IEEE Std 802.15.4 Settings  . . . . . . . . . . . . . . . . .   4
     4.1.  TSCH Schedule . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  Cell Options  . . . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Retransmissions . . . . . . . . . . . . . . . . . . . . .   7
     4.4.  Timeslot Timing . . . . . . . . . . . . . . . . . . . . .   7
     4.5.  Frame Contents  . . . . . . . . . . . . . . . . . . . . .   7
       4.5.1.  IEEE Std 802.15.4 Header  . . . . . . . . . . . . . .   8
       4.5.2.  Enhanced Beacon Frame . . . . . . . . . . . . . . . .   8
       4.5.3.  Acknowledgment Frame  . . . . . . . . . . . . . . . .   9
     4.6.  Link-Layer Security . . . . . . . . . . . . . . . . . . .   9
   5.  RPL Settings  . . . . . . . . . . . . . . . . . . . . . . . .  10
     5.1.  Objective Function  . . . . . . . . . . . . . . . . . . .  10
       5.1.1.  Rank Computation  . . . . . . . . . . . . . . . . . .  11
       5.1.2.  Rank Computation Example  . . . . . . . . . . . . . .  12
     5.2.  Mode of Operation . . . . . . . . . . . . . . . . . . . .  13
     5.3.  Trickle Timer . . . . . . . . . . . . . . . . . . . . . .  13
     5.4.  Packet Contents . . . . . . . . . . . . . . . . . . . . .  13
   6.  Network Formation and Lifetime  . . . . . . . . . . . . . . .  13
     6.1.  Value of the Join Metric Field  . . . . . . . . . . . . .  13
     6.2.  Time Source Neighbor Selection  . . . . . . . . . . . . .  14
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