IEEE 802.15.4 Information Element encapsulation of 6TiSCH Join and Enrollment Information
draft-ietf-6tisch-enrollment-enhanced-beacon-06
6lo Working Group D. Dujovne
Internet-Draft Universidad Diego Portales
Intended status: Standards Track M. Richardson
Expires: May 7, 2020 Sandelman Software Works
November 04, 2019
IEEE 802.15.4 Information Element encapsulation of 6TiSCH Join and
Enrollment Information
draft-ietf-6tisch-enrollment-enhanced-beacon-06
Abstract
In TSCH mode of IEEE STD 802.15.4, opportunities for broadcasts are
limited to specific times and specific channels. Nodes in a TSCH
network typically frequently send Enhanced Beacon (EB) frames to
announce the presence of the network. This document provides a
mechanism by which small details critical for new nodes (pledges) and
long sleeping nodes may be carried within the Enhanced Beacon.
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-
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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 May 7, 2020.
Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved.
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include Simplified BSD License text as described in Section 4.e of
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. Use of BCP 14 Terminology . . . . . . . . . . . . . . . . 2
1.2. Layer-2 Synchronization . . . . . . . . . . . . . . . . . 2
1.3. Layer-3 synchronization: IPv6 Router Solicitations and
Advertisements . . . . . . . . . . . . . . . . . . . . . 3
2. Protocol Definition . . . . . . . . . . . . . . . . . . . . . 4
3. Security Considerations . . . . . . . . . . . . . . . . . . . 5
4. Privacy Considerations . . . . . . . . . . . . . . . . . . . 6
5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
7.1. Normative References . . . . . . . . . . . . . . . . . . 6
7.2. Informative References . . . . . . . . . . . . . . . . . 7
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 8
1. Introduction
[RFC7554] describes the use of the time-slotted channel hopping
(TSCH) mode of [ieee802154]. As further detailed in [RFC8180], an
Enhanced Beacon (EB) is transmitted during a slot designated a
broadcast slot.
1.1. Use of BCP 14 Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
[BCP14] [RFC2119] when, and only when, they appear in all capitals,
as shown here.
Other terminology can be found in [I-D.ietf-6tisch-architecture] in
section 2.1.
1.2. Layer-2 Synchronization
As explained in section 6 of [RFC8180], the Enhanced Beacon (EB) has
a number of purposes: synchronization of ASN and Join Metric,
carrying timeslot template identifier, carrying the channel hopping
sequence identifier, and indicating the TSCH SlotFrame.
The EB is used by nodes already part of a TSCH network to annouce its
existence. Receiving an EB allows a Joining Node (pledge) to learn
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about the network and synchronize to it. The EB may also be used as
a means for a node already part of the network to re-synchronize
[RFC7554].
There is a limited number of timeslots designated as a broadcast slot
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