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        RFC 3077

        Title:      A Link-Layer Tunneling Mechanism for
                    Unidirectional Links
        Author(s):  E. Duros, W. Dabbous, H. Izumiyama, N. Fujii,
                    Y. Zhang
        Status:     Standards Track
        Date:       March 2001
        Mailbox:    Emmanuel.Duros@UDcast.com, Walid.Dabbous@inria.fr,
                    izu@jsat.net, fujii@dct.sony.co.jp, ygz@hrl.com
        Pages:      25
        Characters: 52410
        Updates/Obsoletes/SeeAlso:    None

        I-D Tag:    draft-ietf-udlr-lltunnel-06.txt
        URL:        ftp://ftp.rfc-editor.org/in-notes/rfc3077.txt


This document describes a mechanism to emulate full bidirectional
connectivity between all nodes that are directly connected by a
unidirectional link.  The "receiver" uses a link-layer tunneling
mechanism to forward datagrams to "feeds" over a separate
bidirectional IP (Internet Protocol) network.  As it is implemented at
the link-layer, protocols in addition to IP may also be supported by
this mechanism.

This document is a product of the UniDirectional Link Routing Working
Group of the IETF.

This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol.  Distribution
of this memo is unlimited.

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