[rfc-dist] RFC 3684 on Topology Dissemination Based on Reverse-Path Forwarding (TBRPF)

rfc-editor@rfc-editor.org rfc-editor@rfc-editor.org
Fri, 20 Feb 2004 15:04:14 -0800


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        RFC 3684

        Title:      Topology Dissemination Based on Reverse-Path
                    Forwarding (TBRPF)
        Author(s):  R. Ogier, F. Templin, M. Lewis
        Status:     Experimental
        Date:       February 2004
        Mailbox:    ogier@erg.sri.com, ftemplin@iprg.nokia.com,
        Pages:      46
        Characters: 107963
        Updates/Obsoletes/SeeAlso:    None

        I-D Tag:    draft-ietf-manet-tbrpf-11.txt

        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3684.txt

Topology Dissemination Based on Reverse-Path Forwarding (TBRPF) is a
proactive, link-state routing protocol designed for mobile ad-hoc
networks, which provides hop-by-hop routing along shortest paths to
each destination.  Each node running TBRPF computes a source tree
(providing paths to all reachable nodes) based on partial topology
information stored in its topology table, using a modification of
Dijkstra's algorithm.  To minimize overhead, each node reports only
*part* of its source tree to neighbors.  TBRPF uses a combination of
periodic and differential updates to keep all neighbors informed of
the reported part of its source tree.  Each node also has the option to
report additional topology information (up to the full topology), to
provide improved robustness in highly mobile networks.  TBRPF performs
neighbor discovery using "differential" HELLO messages which report
only *changes* in the status of neighbors.  This results in HELLO
messages that are much smaller than those of other link-state routing
protocols such as OSPF.

This document is a product of the Mobile Ad-hoc Networks Working Group
of the IETF.

This memo defines an Experimental Protocol for the Internet community.
It does not specify an Internet standard of any kind.  Discussion and
suggestions for improvement are requested.  Distribution of this memo
is unlimited.

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute


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