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Status:

EXPERIMENTAL

Authors:

U. Herberg, Ed.
A. Cardenas
T. Iwao
M. Dow
S. Cespedes

Stream:

IETF

Source:

NON WORKING GROUP

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DOI:  https://doi.org/10.17487/RFC6971

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Abstract

This document specifies the Depth-First Forwarding (DFF) protocol forIPv6 networks, a data-forwarding mechanism that can increasereliability of data delivery in networks with dynamic topology and/orlossy links. The protocol operates entirely on the forwarding planebut may interact with the routing plane. DFF forwards data packetsusing a mechanism similar to a "depth-first search" for thedestination of a packet. The routing plane may be informed offailures to deliver a packet or loops. This document specifies theDFF mechanism both for IPv6 networks (as specified in RFC 2460) andfor "mesh-under" Low-Power Wireless Personal Area Networks (LoWPANs),as specified in RFC 4944. The design of DFF assumes that theunderlying link layer provides means to detect if a packet has beensuccessfully delivered to the Next Hop or not. It is applicable fornetworks with little traffic and is used for unicast transmissionsonly.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.