An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
draft-ietf-6tisch-architecture-07

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Document Type Active Internet-Draft (6tisch WG)
Last updated 2015-04-10
Replaces draft-thubert-6tisch-architecture
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6TiSCH                                                   P. Thubert, Ed.
Internet-Draft                                                     Cisco
Intended status: Standards Track                          April 10, 2015
Expires: October 12, 2015

     An Architecture for IPv6 over the TSCH mode of IEEE 802.15.4e
                   draft-ietf-6tisch-architecture-07

Abstract

   This document is the first volume of the 6TiSCH architecture of an
   IPv6 Multi-Link subnet that is composed of a high speed powered
   backbone and a number of IEEE802.15.4e TSCH low-power wireless
   networks attached and synchronized by Backbone Routers.  The
   architecture defines mechanisms to establish and maintain routing and
   scheduling in a centralized, distributed, or mixed fashion.

Status of This Memo

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   This Internet-Draft will expire on October 12, 2015.

Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Thubert                 Expires October 12, 2015                [Page 1]
Internet-Draft             6tisch-architecture                April 2015

   the Trust Legal Provisions and are provided without warranty as
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Applications and Goals  . . . . . . . . . . . . . . . . . . .   5
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     5.1.  Components  . . . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Dependencies  . . . . . . . . . . . . . . . . . . . . . .  10
   6.  6LoWPAN (and RPL) . . . . . . . . . . . . . . . . . . . . . .  10
     6.1.  RPL Leaf Support in 6LoWPAN ND  . . . . . . . . . . . . .  12
     6.2.  registration Failures Due to Movement . . . . . . . . . .  13
     6.3.  Proxy registration  . . . . . . . . . . . . . . . . . . .  13
     6.4.  Target Registration . . . . . . . . . . . . . . . . . . .  13
     6.5.  RPL root vs. 6LBR . . . . . . . . . . . . . . . . . . . .  14
     6.6.  Securing the Registration . . . . . . . . . . . . . . . .  14
   7.  Communication Paradigms and Interaction Models  . . . . . . .  15
   8.  TSCH and 6top . . . . . . . . . . . . . . . . . . . . . . . .  16
     8.1.  6top  . . . . . . . . . . . . . . . . . . . . . . . . . .  16
       8.1.1.  Hard Cells  . . . . . . . . . . . . . . . . . . . . .  16
       8.1.2.  Soft Cells  . . . . . . . . . . . . . . . . . . . . .  17
     8.2.  6top and RPL Objective Function operations  . . . . . . .  17
     8.3.  Network Synchronization . . . . . . . . . . . . . . . . .  18
     8.4.  SlotFrames and Priorities . . . . . . . . . . . . . . . .  19
     8.5.  Distributing the reservation of cells . . . . . . . . . .  20
   9.  Schedule Management Mechanisms  . . . . . . . . . . . . . . .  22
     9.1.  Static Scheduling . . . . . . . . . . . . . . . . . . . .  22
     9.2.  Neighbor-to-neighbor Scheduling . . . . . . . . . . . . .  22
     9.3.  remote Monitoring and Schedule Management . . . . . . . .  23
     9.4.  Hop-by-hop Scheduling . . . . . . . . . . . . . . . . . .  24
   10. Forwarding Models . . . . . . . . . . . . . . . . . . . . . .  24
     10.1.  Track Forwarding . . . . . . . . . . . . . . . . . . . .  24
       10.1.1.  Transport Mode . . . . . . . . . . . . . . . . . . .  26
       10.1.2.  Tunnel Mode  . . . . . . . . . . . . . . . . . . . .  27
       10.1.3.  Tunnel Metadata  . . . . . . . . . . . . . . . . . .  28
     10.2.  Fragment Forwarding  . . . . . . . . . . . . . . . . . .  28
     10.3.  IPv6 Forwarding  . . . . . . . . . . . . . . . . . . . .  29
   11. Centralized vs. Distributed Routing . . . . . . . . . . . . .  30
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