Internet Info 1997 December/Internet_Info_CD-ROM_Walnut_Creek_December_1997.iso/ietf/ipatm/atm-minutes-93mar.txt

Text File | 1993-05-17 | 14KB | 370 lines

CURRENT_MEETING_REPORT_


Reported by Bob Hinden/Sun

Minutes of the IP over Asynchronous Transfer Mode Working Group (ATM)

Agenda


   o Overview of ATM Forum Addressing Work, Keith McCloghrie
   o Address Resolution in ATM Networks, Subbu Subramaniam
   o Architecture, Address Translation, and Call Control, Fong-Ching
     Liaw
   o NBMA Address Resolution Protocol (NBMA ARP), Juha Heinanen
   o General Discussion of ATM Address Resolution
   o Issues in the Interconnection of LANs and ATM Networks, Tim Salo


The IP over Working Group meet for three sessions at the March IETF
meeting.  Over 129 people attended the Working Group sessions.

The first session consisted of four presentations on ATM addressing and
ATM/Internet address resolution.  Keith McCloghrie presented an overview
of the ATM Forum addressing work.  Subbu Subramaniam presented his ideas
on how ATM address resolution should work.  Fong-Ching Liaw Presented
pros and cons of Subnet and Peer model of address resolution in ATM
networks and Juha Heinanen presented an overview of his NBMA Address
Resolution Protocol (NBMA ARP) proposal.

There was considerable discussion about how address resolution should
work, and the pros and cons of the subnet vs.  peer model.  There were
strong views on both sides.  Subnet model is a conventual internet model
where each network has it own addressing, and internetworking routing
and addressing runs on top of this.  In the peer model the ATM network
is knowledgeable about and participates in Internet routing.  Call
connection (signaling) requests would use internet address to specify
destination.  The session ended with the suggestion that neither one
approach would prevail and that there should be proposed mechanisms for
combining the two approaches.

Mark Leabach presented slides with his thoughts on which areas the
Working Group should focus on first.  He saw two approaches in the
Working Group:  Functional layerists (ATM as a wire-replacement) vs.
ATM IP Morph'ist.  He made a strong argument that the Working Group
should first specify how IP over ATM should work in the ``classical IP''
mode where ATM networks are connected by routers.  He presented the
following problems which need to be solved:


   o IP Encapsulation in ATM (Done).

   o How to ``Roll your own'' wires over ATM between IP elements in the

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     Network.

   o How to Dynamically find other IP hosts on an ATM LAN.

   o How to do connection-less service.

   o Knowing that you have an all ATM path between IP elements, what
     optimizations can be made?

   o Authentication VC Call Setup.

   o Management Tools such as Trace route.

   o Resource Setup/QOS.

   o IP Multicast to ATM Multicast.


Tim Salo presented a talk on the Gigabit Testbed Talk.  The goal of the
project is to create a seamless connection between ATM LAN's and ATM
WAN's.  His preliminary observations were that there are no complete
proposals available today, some ares only slightly explored or
identified, much new functionality must be implemented, and most of the
problems are in the wide area.  He grouped issues into several problem
areas:


   o ATM Address Assignment
   o IP Address Assignment
   o Address resolution
   o IP over ATM Internets
   o IP route optimization
   o Locality (IP only talks to local entities)


His final observations were that we need a complete solution if ATM is
going to be the solution.  It is important to avoid making the customer
the system integrator.  Significantly more implementation experience is
needed.

Ramon Caceres presented the results of his simulation of different
approaches for VC multiplexing.  His conclusions were that one VC per
connection gives the best performance, followed by one VC per type of
traffic (e.g., telnet, ftp, mail, etc.).  One VC per router pair gives
poor performance.  The overall goal should be to separate traffic as
much as possible

After a final discussion of subnet vs.  peer addressing models, the
Working Group agreed that the following issues were important to pursue:


   o Focus on Subnet model first.  Work on the peer model should

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     continue, but it is important to develop a solution for the subnet
     model first.

   o Prefer strongly typed addresses with peer model vs.  mechanical
     address translation

   o Simulation of Subnet model is important.  Need to look at
     performance issues based on data for real IP traffic.

   o ARP Servers will need mechanisms for updating and synchronizing
     databases.

   o Charging is an issue with ARP servers.

   o Auto configuration and discovery of ARP servers necessary.


Action Items

The following actions items were assigned:


Steve Willis:       Write contribution to be submitted to the ATM forum
                    on encapsulation (LLC) negotiation.  Due in 1 Week.
Mark Leabach:       Write a framework document describing the using ATM
                    in the Classical IP Model (i.e., ATM networks
                    connected by routers).  Due prior to next IETF
                    Meeting.
Robert Cole:        Write a framework document describing the using ATM
                    in the End-End Model (i.e., seamless ATM from
                    initial source to final destination).  Due prior to
                    next IETF Meeting.
Juha Heinanen:      Complete draft on NBMA Address Resolution.  Will
                    include both General Media Independent specification
                    and ATM specific usage guidelines.  Due prior to
                    next IETF Meeting.
Bob Hinden:         Develop a list of IPoverATM Issues.  Due in May.



Attendees

Masuma Ahmed             [e-mail]
Robert Aiken             [e-mail]
N. Akiko Aizawa          [e-mail]
Kannan Alagappan         [e-mail]
David Arneson            [e-mail]
Fred Baker               [e-mail]

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Serpil Bayraktar         [e-mail]
Nutan Behki              [e-mail]
Tom Benkart              [e-mail]
Lou Berger               [e-mail]
B. Sue Blair             [e-mail]
John Boatright           [e-mail]
Rich Bowen               [e-mail]
Deborah Boyer            [e-mail]
Monroe Bridges           [e-mail]
Thomas Brisco            [e-mail]
Caralyn Brown            [e-mail]
Theodore Brunner         [e-mail]
Randy Butler             [e-mail]
Ramon Caceres            [e-mail]
Ross Callon              [e-mail]
Jeff Carman              [e-mail]
John Chang               [e-mail]
Yee-Hsiang Chang         [e-mail]
Anthony Chow             [e-mail]
Thomas Christie          [e-mail]
George Clapp             [e-mail]
Richard Cogger           [e-mail]
Robert Cole              [e-mail]
Michael Collins          [e-mail]
Rob Coltun               [e-mail]
Tracy Cox                [e-mail]
Dave Cullerot            [e-mail]
Brent Curtiss            [e-mail]
James Davin              [e-mail]
Shane Dawalt             [e-mail]
Steve DeJarnett          [e-mail]
Osmund DeSouza           [e-mail]
M.J. Dixon               [e-mail]
Kurt Dobbins             [e-mail]
Bob Downs                [e-mail]
Kishan Dudkikar          [e-mail]
Ed Ellesson              [e-mail]
Chip Elliott             [e-mail]
Robert Enger             [e-mail]
Michael Fidler           [e-mail]
Francois Fluckiger       [e-mail]
Craig Fox                [e-mail]
Karen Frisa              [e-mail]
Dan Frommer              [e-mail]
John Gawf                [e-mail]
Eugene Geer              [e-mail]
Kenneth Giusti           kgiusti.chipcom.com
Joseph Godsil            [e-mail]
Mike Goguen              [e-mail]
Daniel Grossman          [e-mail]
Chris Gunner             [e-mail]
Tony Hain                [e-mail]
Joel Halpern             [e-mail]
Patrick Hanel            [e-mail]

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Danny Hanson             [e-mail]
Eugene Hastings          [e-mail]
Ken Hayward              [e-mail]
Frank Heath              [e-mail]
Roland Hedberg           [e-mail]
John Heimaster           [e-mail]
Juha Heinanen            [e-mail]
Robert Hinden            [e-mail]
Don Hofacker             [e-mail]
Don Hoffman              [e-mail]
Frank Hoffmann           [e-mail]
John Hopprich            [e-mail]
Kathy Huber              [e-mail]
Phil Irey                [e-mail]
Keisuke Ito              [e-mail]
David Jacobson           [e-mail]
David Johnson            [e-mail]
Merike Kaeo              [e-mail]
Kenneth Key              [e-mail]
Glenn Kime               [e-mail]
Charley Kline            [e-mail]
Stev Knowles             [e-mail]
Lakshman Krishnamurthy   [e-mail]
Giri Kuthethoor          [e-mail]
Mark Laubach             [e-mail]
Fong-Ching Liaw          [e-mail]
Yu-Lin Lu                [e-mail]
Paul Lustgraaf           [e-mail]
Charles Lynn             [e-mail]
Carl Madison             [e-mail]
Jamshid Mahdavi          [e-mail]
James Mahon              [e-mail]
Andrew Malis             [e-mail]
Tracy Mallory            [e-mail]
Allison Mankin           [e-mail]
Michael Marcinkevicz     [e-mail]
Cynthia Martin           [e-mail]
Jerry Martin             [e-mail]
Matt Mathis              [e-mail]
Jun Matsukata            [e-mail]
Keith McCloghrie         [e-mail]
Donald Merritt           [e-mail]
David Meyer              [e-mail]
Gerry Meyer              [e-mail]
James Miner              [e-mail]
Robert Mines             [e-mail]
Greg Minshall            [e-mail]
Matthew Morrisey         [e-mail]
Judy Nasar               [e-mail]
Steve Neruda             [e-mail]
Tom Nisbet               [e-mail]
David O'Leary            [e-mail]
Zbigniew Opalka          [e-mail]
Ayal Opher               [e-mail]

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Joe Pagan                [e-mail]
Laura Pate               [e-mail]
Maryann Perez            [e-mail]
Drew Perkins             [e-mail]
Radia Perlman            [e-mail]
Roy Perry                [e-mail]
James Philippou          [e-mail]
David Piscitello         [e-mail]
Narendra Popat           [e-mail]
Dave Rand                [e-mail]
Venkat Rangan            venkat@.metrix.com
David Reese              [e-mail]
Bradley Rhoades          [e-mail]
Tony Richards            [e-mail]
Michael Roberts          [e-mail]
Ben Robinson             [e-mail]
Kenneth Rodemann         [e-mail]
Benny Rodrig             [e-mail]
Steve Romig              [e-mail]
Shawn Routhier           [e-mail]
Timothy Salo             [e-mail]
Hal Sandick              [e-mail]
Vilson Sarto             [e-mail]
Shiva Sawant             [e-mail]
Andrew Schmidt           [e-mail]
Tim Seaver               [e-mail]
Paul Serice              [e-mail]
Kanan Shah               [e-mail]
Karen Shay               [e-mail]
Allyson Showalter        [e-mail]
Keith Sklower            [e-mail]
Andrew Smith             [e-mail]
Marco Sosa               [e-mail]
Roxanne Streeter         [e-mail]
Richard Stuart           [e-mail]
Subbu Subramaniam        [e-mail]
Terry Sullivan           [e-mail]
Wayne Tackabury          [e-mail]
Sally Tarquinio          [e-mail]
John Tavs                [e-mail]
Kaj Tesink               [e-mail]
Kamlesh Tewani           [e-mail]
Susan Thomson            [e-mail]
Marek Tomaszewski        [e-mail]
Mario Vecchi             [e-mail]
Huyen Vu                 [e-mail]
Chuck Warlick            [e-mail]
Scott Wasson             [e-mail]
Jack Waters              [e-mail]
James Watt               [e-mail]
Von Welch                [e-mail]
Rick Wilder              [e-mail]
Kirk Williams            [e-mail]
Steven Willis            [e-mail]

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Walter Wimer             [e-mail]
Linda Winkler            [e-mail]
Richard Woundy           [e-mail]
Liang Wu                 [e-mail]
Yow-Wei Yao              [e-mail]
Chin Yuan                [e-mail]
Paul Zawada              [e-mail]



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