Root initiated routing state in RPL
draft-ietf-roll-dao-projection-15
ROLL P. Thubert, Ed.
Internet-Draft Cisco Systems
Intended status: Standards Track R.A. Jadhav
Expires: 31 May 2021 Huawei Tech
M. Gillmore
Itron
27 November 2020
Root initiated routing state in RPL
draft-ietf-roll-dao-projection-15
Abstract
This document extends RFC 6550 and RFC 6553 to enable a RPL Root to
install and maintain Projected Routes within its DODAG, along a
selected set of nodes that may or may not include self, for a chosen
duration. This potentially enables routes that are more optimized or
resilient than those obtained with the classical distributed
operation of RPL, either in terms of the size of a Routing Header or
in terms of path length, which impacts both the latency and the
packet delivery ratio.
Status of This Memo
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This Internet-Draft will expire on 31 May 2021.
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Provisions Relating to IETF Documents (https://trustee.ietf.org/
license-info) in effect on the date of publication of this document.
Thubert, et al. Expires 31 May 2021 [Page 1]
Internet-Draft DAO Projection November 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1. Requirements Language . . . . . . . . . . . . . . . . . . 5
2.2. Glossary . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3. Other Terms . . . . . . . . . . . . . . . . . . . . . . . 6
2.4. References . . . . . . . . . . . . . . . . . . . . . . . 6
3. Extending RFC 6550 . . . . . . . . . . . . . . . . . . . . . 6
3.1. Projected DAO . . . . . . . . . . . . . . . . . . . . . . 6
3.2. Sibling Information Option . . . . . . . . . . . . . . . 8
3.3. P-DAO Request . . . . . . . . . . . . . . . . . . . . . . 8
3.4. Extending the RPI . . . . . . . . . . . . . . . . . . . . 8
4. Extending RFC 6553 . . . . . . . . . . . . . . . . . . . . . 8
5. Extending RFC 8138 . . . . . . . . . . . . . . . . . . . . . 9
6. New RPL Control Messages and Options . . . . . . . . . . . . 10
6.1. New P-DAO Request Control Message . . . . . . . . . . . . 10
6.2. New PDR-ACK Control Message . . . . . . . . . . . . . . . 11
6.3. Via Information Options . . . . . . . . . . . . . . . . . 12
6.4. Sibling Information Option . . . . . . . . . . . . . . . 15
7. Projected DAO . . . . . . . . . . . . . . . . . . . . . . . . 16
7.1. Requesting a Track . . . . . . . . . . . . . . . . . . . 18
7.2. Identifying a Track . . . . . . . . . . . . . . . . . . . 18
7.3. Installing a Track . . . . . . . . . . . . . . . . . . . 19
7.4. Forwarding Along a Track . . . . . . . . . . . . . . . . 20
7.5. Non-Storing Mode Projected Route . . . . . . . . . . . . 21
7.6. Storing Mode Projected Route . . . . . . . . . . . . . . 23
8. Security Considerations . . . . . . . . . . . . . . . . . . . 25
9. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 25
9.1. New Elective 6LoWPAN Routing Header Type . . . . . . . . 25
9.2. New Critical 6LoWPAN Routing Header Type . . . . . . . . 25
9.3. New Subregistry For The RPL Option Flags . . . . . . . . 26
9.4. New RPL Control Codes . . . . . . . . . . . . . . . . . . 26
9.5. New RPL Control Message Options . . . . . . . . . . . . . 27
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