The Routing Protocol for Low-Power and Lossy Networks (RPL) Option for Carrying RPL Information in Data-Plane Datagrams
RFC 6553
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RFC - Proposed Standard
(March 2012; No errata)
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Last updated |
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2015-10-14
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draft-hui-6man-rpl-option
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IETF
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plain text
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RFC 6553 (Proposed Standard)
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Unknown
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Responsible AD |
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Jari Arkko
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Brian Haberman (brian@innovationslab.net) is the document shepherd.
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Internet Engineering Task Force (IETF) J. Hui
Request for Comments: 6553 JP. Vasseur
Category: Standards Track Cisco Systems
ISSN: 2070-1721 March 2012
The Routing Protocol for Low-Power and Lossy Networks (RPL) Option
for Carrying RPL Information in Data-Plane Datagrams
Abstract
The Routing Protocol for Low-Power and Lossy Networks (RPL) includes
routing information in data-plane datagrams to quickly identify
inconsistencies in the routing topology. This document describes the
RPL Option for use among RPL routers to include such routing
information.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by the
Internet Engineering Steering Group (IESG). Further information on
Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6553.
Copyright Notice
Copyright (c) 2012 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
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document. Code Components extracted from this document must
include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Hui & Vasseur Standards Track [Page 1]
RFC 6553 RPL Option March 2012
Table of Contents
1. Introduction ....................................................2
1.1. Requirements Language ......................................3
2. Overview ........................................................3
3. Format of the RPL Option ........................................3
4. RPL Router Behavior .............................................5
5. Security Considerations .........................................6
5.1. DAG Inconsistency Attacks ..................................6
5.2. Destination Advertisement Object (DAO)
Inconsistency Attacks ......................................7
6. IANA Considerations .............................................7
7. Acknowledgements ................................................8
8. References ......................................................8
8.1. Normative References .......................................8
8.2. Informative References .....................................8
1. Introduction
RPL is a distance vector IPv6 routing protocol designed for Low-Power
and Lossy Networks (LLNs) [RFC6550]. Such networks are typically
constrained in energy and/or channel capacity. To conserve precious
resources, a routing protocol must generate control traffic
sparingly. However, this is at odds with the need to quickly
propagate any new routing information to resolve routing
inconsistencies quickly.
To help minimize resource consumption, RPL uses a slow proactive
process to construct and maintain a routing topology but a reactive
and dynamic process to resolving routing inconsistencies. In the
steady state, RPL maintains the routing topology using a low-rate
beaconing process. However, when RPL detects inconsistencies that
may prevent proper datagram delivery, RPL temporarily increases the
beacon rate to quickly resolve those inconsistencies. This dynamic
rate control operation is governed by the use of dynamic timers also
referred to as "Trickle" timers and defined in [RFC6206]. In
contrast to other routing protocols (e.g., OSPF [RFC2328]), RPL
detects routing inconsistencies using data-path verification, by
including routing information within the datagram itself. In doing
so, repair mechanisms operate only as needed, allowing the control
and data planes to operate on similar time scales. The main
motivation for data-path verification in LLNs is that control-plane
traffic should be carefully bounded with respect to the data traffic.
Intuitively, there is no need to solve routing issues (which may be
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