[AG-TECH] Re: IP Multicast Architecture Gap Analysis

[David Meyer]

Thanks Bill.


Dave

On Wed, Jul 31, 2002 at 12:25:48PM -0500, Bill Nickless wrote:
>> 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.
>> 
>> 
>> ===
>> Bill Nickless    http://www.mcs.anl.gov/people/nickless      +1 630 252 7390
>> PGP:0E 0F 16 80 C5 B1 69 52 E1 44 1A A5 0E 1B 74 F7     nickless at mcs.anl.gov