All things related to multicast

[Bill Nickless <>]

I have submitted an Internet Draft to the IETF based on the strategic 
direction adopted at the IETF MBONED meeting in Yokohama.  It is now posted 
in the IETF I-D repository.

ftp://ftp.ietf.org/internet-drafts/draft-ietf-mboned-iesg-gap-analysis-00.txt

Excerpts:

   Internet Draft                                  Editors:    D. Meyer
                                                                 Sprint
   Document:                                                B. Nickless
   draft-ietf-mboned-iesg-gap-analysis-00.txt          Argonne National
                                                             Laboratory
   Expires:                                                   July 2002
   January 2003


                      Internet Multicast Gap Analysis
                       from the MBONED Working Group
                               for the IESG


2. Abstract

   An overview of IP multicast as deployed in the Internet today, from
   the perspective of the MBONED working group.  Existing
   infrastructure is examined critically.  Suggestions for possible
   improvement of the overall architecture are presented for the IESG.


3. Table of Contents

   1. Status of this Memo.............................................1
   2. Abstract........................................................1
   4. Overview and Background.........................................2
   5. Conventions used in this document...............................2
   6. RFC 1112........................................................3
   7. Source-Specific Multicast.......................................3
   8. Host Extensions for IP Multicast................................3
   9. Mapping of Multicast Group Addresses to Ethernet MAC Addresses..4
   10. Local Subnet Receiver Interest Protocol (IGMP).................4
   11. Collision-Sense Media Access Sender Model......................4
   12. Multicast Gateways.............................................5
   13. Dense Mode Internet Multicast Routing..........................5
   14. Reachability Protocol Independent Multicast Routing............6
   15. Sparse Mode Internet Multicast Routing.........................7
   16. Mixed Dense/Sparse Mode Internet Multicast Routing.............7
   17. Bursty Sources vs. Sparse Mode Forwarding State Maintenance....8
   18. Co-mingled Source Knowledge and Packet Forwarding..............8
   19. Co-mingled IP and Ethernet Routing.............................9
   20. Inter-Domain IP Multicast Exchange Points......................9
   21. IP Multicast Architectural Gaps...............................11
   22. Recommendations from MBONED to IESG...........................11
   23. Acknowledgements..............................................13
   24. Security Considerations.......................................13
   25. References....................................................14
   26. Editors' Addresses............................................14

4. Overview and Background

   At the IETF-54 meeting, the MBONED working group recommended that
   the MSDP working group publish their current work as an
   Informational RFC and shut down.  Some participants in the MBONED
   and MSDP working groups believed that the recurring discussions
   about the operation of MSDP were proxy arguments about the IP
   Multicast service model, and how that model can be supported in the
   Internet.  Participants came to rough consensus that the best place
   for these overall service model and deployment questions is the
   MBONED working group.

   A two phase approach was adopted.  The short-term objective is to
   document existing MSDP implementations and deployments.  A longer-
   term objective for the MBONED working group is to perform a "gap
   analysis" of the existing IP multicast service model, protocols, and
   deployment.

   This document represents that ôgap analysis,ö and is intended as
   advice to IESG.  The MBONED participants hope the IESG will consider
   this advice in the context of IESG guidance for further IP multicast
   protocol development and deployment work.


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Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
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