RPL DAG Metric Container (MC) Node State and Attribute (NSA) object type extension
draft-koutsiamanis-roll-nsa-extension-00
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ROLL R. Koutsiamanis, Ed.
Internet-Draft G. Papadopoulos
Intended status: Standards Track N. Montavont
Expires: July 21, 2018 IMT Atlantique
P. Thubert
Cisco
January 17, 2018
RPL DAG Metric Container (MC) Node State and Attribute (NSA) object type
extension
draft-koutsiamanis-roll-nsa-extension-00
Abstract
Implementing 6TiSCH Packet Replication and Elimination from / to the
RPL root requires the ability to forward copies of packets over
different paths via different RPL parents. Selecting the appropriate
parents to achieve ultra-low latency and jitter requires information
about a node's parents. This document details what information needs
to be transmitted and how it is encoded within a packet to enable
this functionality.
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
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on July 21, 2018.
Copyright Notice
Copyright (c) 2018 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
Koutsiamanis, et al. Expires July 21, 2018 [Page 1]
Internet-Draft RPL MC NSA object type extension January 2018
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Tracks . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3.1. Tracks Overview . . . . . . . . . . . . . . . . . . . . . 3
3.2. Complex Tracks . . . . . . . . . . . . . . . . . . . . . 4
4. Packet Replication and Elimination principles . . . . . . . . 4
5. Alternative Parent Selection Issue . . . . . . . . . . . . . 5
6. Node State and Attribute (NSA) object type extension . . . . 5
6.1. Compression . . . . . . . . . . . . . . . . . . . . . . . 7
7. Security Considerations . . . . . . . . . . . . . . . . . . . 7
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 7
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 8
9.1. Informative references . . . . . . . . . . . . . . . . . 8
9.2. Other Informative References . . . . . . . . . . . . . . 8
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 9
1. Introduction
Industrial network applications have stringent requirements on
reliability and predictability, and typically leverage 1+1
redundancy, aka Packet Replication and Elimination (PRE)
[I-D.papadopoulos-6tisch-pre-reqs] to achieve their goal. In order
for wireless networks to be able to be used in such applications, the
principles of Deterministic Networking [I-D.ietf-detnet-architecture]
lead to designs that aim at maximizing packet delivery rate and
minimizing latency and jitter. Additionally, given that the network
nodes often do not have an unlimited power supply, energy consumption
needs to be minimized as well.
To meet this goal, IEEE Std. 802.15.4 [IEEE802154-2015] provides
Time-Slotted Channel Hopping (TSCH), a mode of operation which uses a
fixed communication schedule to allow deterministic medium access as
well as channel hopping to work around radio interference. However,
since TSCH uses retransmissions in the event of a failed
transmission, end-to-end delay and jitter performance can
deteriorate.
The 6TiSCH working group, focusing on IPv6 over IEEE Std.
802.15.4-TSCH, has worked on the issues previously highlighted and
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