2020-09-26, rev -09: Packet Replication and Elimination is a method in which several copies of a data packet are sent in the network in order to achieve high reliability and low jitter. This document details how to apply Packet Replication and Elimination in RPL, especially how to exchange information within RPL control packets to let a node better select the different parents that will be used to forward the multiple copies of a packet. This document also describes the Objective Function which takes advantage of this information to implement multi-path routing.
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