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The Minimum Rank Objective Function with Hysteresis

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Omprakash Gnawali , P Levis
Last updated 2013-02-19 (Latest revision 2010-09-21)
Replaced by RFC 6719
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-roll-minrank-hysteresis-of
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Hysteresis delays the effect of changes in link metric on parent selection. Such delay makes the topology stable despite jitters in link metrics. The Routing Protocol for Low Power and Lossy Networks (RPL) allows the use of objective functions to construct routes that optimize or constrain a routing metric on the paths. This specification describes the Minimum Rank Objective Function with Hysteresis (MRHOF), an objective function that minimizes the node rank in terms of a given metric, while using hysteresis to prevent excessive rank churn. The use of MRHOF with RPL results in nodes selecting stable paths that minimize the given routing metric to the roots of a Directed Acyclic Graph (DAG).


Omprakash Gnawali
P Levis

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)