RFC 5015 on Bidirectional Protocol Independent Multicast (BIDIR-PIM)

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Subject: RFC 5015 on Bidirectional Protocol Independent Multicast (BIDIR-PIM)
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A new Request for Comments is now available in online RFC libraries.

        RFC 5015

        Title:      Bidirectional Protocol Independent Multicast 
        Author:     M. Handley, I. Kouvelas,
                    T. Speakman, L. Vicisano
        Status:     Standards Track
        Date:       October 2007
        Mailbox:    M.Handley@cs.ucl.ac.uk, 
                    speakman@cisco.com,  lorenzo@digitalfountain.com
        Pages:      43
        Characters: 96431
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-pim-bidir-09.txt

        URL:        http://www.rfc-editor.org/rfc/rfc5015.txt

This document discusses Bidirectional PIM (BIDIR-PIM), a variant of PIM
Sparse-Mode that builds bidirectional shared trees connecting
multicast sources and receivers.  Bidirectional trees are built
using a fail-safe Designated Forwarder (DF) election mechanism
operating on each link of a multicast topology.  With the
assistance of the DF, multicast data is natively forwarded from
sources to the Rendezvous-Point (RP) and hence along the shared tree
to receivers without requiring source-specific state.  The DF
election takes place at RP discovery time and provides the route
to the RP, thus eliminating the requirement for data-driven
protocol events.  [STANDARDS TRACK]

This document is a product of the Protocol Independent Multicast
Working Group of the IETF.

This is now a Proposed Standard Protocol.

STANDARDS TRACK: 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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