DIS Modifications
draft-ietf-roll-dis-modifications-01
Internet Engineering Task Force C. Gundogan, Ed.
Internet-Draft HAW Hamburg
Intended status: Informational D. Barthel
Expires: May 20, 2020 Orange
E. Baccelli
INRIA
November 21, 2019
DIS Modifications
draft-ietf-roll-dis-modifications-01
Abstract
This document augments RFC6550 with DIS flags and options that
allow a RPL node to better control how neighbor RPL routers respond
to its solicitation for DIOs.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on September 14, 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
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(http://trustee.ietf.org/license-info) in effect on the date of
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include Simplified BSD License text as described in Section 4.e of
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the Trust Legal Provisions and are provided without warranty as
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1. RFC6550 refresher . . . . . . . . . . . . . . . . . . . . 2
1.2. Undesirable effects . . . . . . . . . . . . . . . . . . . 3
1.3. Desired improvments . . . . . . . . . . . . . . . . . . . 4
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. DIS Base Object flags . . . . . . . . . . . . . . . . . . . . 5
4. DIS Options . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.1. Metric Container . . . . . . . . . . . . . . . . . . . . 6
4.2. Response Spreading . . . . . . . . . . . . . . . . . . . 6
4.3. DIO Option Request . . . . . . . . . . . . . . . . . . . 7
5. Full behavior illustration . . . . . . . . . . . . . . . . . 8
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
6.1. DIS Flags . . . . . . . . . . . . . . . . . . . . . . . . 9
6.2. RPL Control Message Options . . . . . . . . . . . . . . . 10
7. Security Considerations . . . . . . . . . . . . . . . . . . . 10
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 10
9. References . . . . . . . . . . . . . . . . . . . . . . . . . 10
9.1. Normative References . . . . . . . . . . . . . . . . . . 10
9.2. Informative References . . . . . . . . . . . . . . . . . 11
Appendix A. Applications . . . . . . . . . . . . . . . . . . . . 11
A.1. A Leaf Node Joining a DAG . . . . . . . . . . . . . . . . 11
A.2. Identifying A Defunct DAG . . . . . . . . . . . . . . . . 12
A.3. Explicit and Implicit DIO Option Requests . . . . . . . . 14
Appendix B. Experimental data . . . . . . . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 15
1. Introduction
This document augments [RFC6550], the RPL routing protocol
specification.
1.1. RFC6550 refresher
Per [RFC6550], a RPL node can send a DODAG Information Solicitation
(DIS) message to solicit DODAG Information Object (DIO) messages from
neighbor RPL routers.
A DIS can be multicast to all the routers in range or it can be
unicast to a specific neighbor router.
A DIS may carry a Solicited Information option that specifies the
predicates of the DAG(s) the soliciting node is interested in. In
the absence of such Solicited Information option, the soliciting node
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is deemed interested in receiving DIOs for all the DAGs known by the
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