Internet Engineering Task Force (IETF) M. Goyal, Ed.
Request for Comments: 6998 Univ. of Wisconsin Milwaukee
Category: Experimental E. Baccelli
ISSN: 2070-1721 INRIA
A. Brandt
Sigma Designs
J. Martocci
Johnson Controls
August 2013
A Mechanism to Measure the Routing Metrics along a Point-to-Point Route
in a Low-Power and Lossy Network
Abstract
This document specifies a mechanism that enables a Routing Protocol
for Low-power and Lossy Networks (RPL) router to measure the
aggregated values of given routing metrics along an existing route
towards another RPL router, thereby allowing the router to decide if
it wants to initiate the discovery of a better route.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for examination, experimental implementation, and
evaluation.
This document defines an Experimental Protocol for the Internet
community. 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). Not
all documents approved by the IESG are a candidate for any level of
Internet Standard; see 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/rfc6998.
Goyal, et al. Experimental [Page 1]RFC 6998 Measurement of Routing Metrics in LLNs August 2013Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the
document authors. All rights reserved.
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Goyal, et al. Experimental [Page 2]RFC 6998 Measurement of Routing Metrics in LLNs August 2013Table of Contents
1. Introduction ....................................................4
1.1. Terminology ................................................5
2. Overview ........................................................6
3. The Measurement Object (MO) .....................................7
3.1. Format of the Base MO ......................................8
3.2. Secure MO .................................................12
4. Originating a Measurement Request ..............................13
4.1. When Measuring a Hop-by-Hop Route with a Global
RPLInstanceID .............................................14
4.2. When Measuring a Hop-by-Hop Route with a Local
RPLInstanceID with Route Accumulation Off .................15
4.3. When Measuring a Hop-by-Hop Route with a Local
RPLInstanceID with Route Accumulation On ..................16
4.4. When Measuring a Source Route .............................17
5. Processing a Measurement Request at an Intermediate Point ......19
5.1. When Measuring a Hop-by-Hop Route with a Global
RPLInstanceID .............................................19
5.2. When Measuring a Hop-by-Hop Route with a Local
RPLInstanceID with Route Accumulation Off .................21
5.3. When Measuring a Hop-by-Hop Route with a Local
RPLInstanceID with Route Accumulation On ..................21
5.4. When Measuring a Source Route .............................22
5.5. Final Processing ..........................................23
6. Processing a Measurement Request at the End Point ..............23
6.1. Generating the Measurement Reply ..........................24
7. Processing a Measurement Reply at the Start Point ..............25
8. Security Considerations ........................................25
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