CURRENT_MEETING_REPORT_

Reported by Mark Laubach/Hewlett-Packard

Minutes of the IP Over Asynchronous Transfer Mode Working Group (IPATM)


Agenda

The agenda was bashed to be the following:


  o Introduction---working group work plan and dormancy
  o Default MTU draft status
  o IP multicast statement
  o ATM forum update
  o LAN emulation introduction
  o Firewall security discussion
  o Conventional IP over ATM model
  o Implementation guide


Working Group Dormancy After Toronto

After the Toronto meeting, IPATM will go ``dormant.''  Current work
includes implementation guide, multicast, and security.  These items
should be completed either before or at the Toronto meeting.

ATM needs to ``grow up.''  Implementation experience must be gathered to
support Proposed Standard to Draft Standard status elevation for
RFC 1483, RFC 1577, and the MTU draft.  Discussions will continue on the
mailing list.  The framework to guide the post-classical work needs to
be developed.

In Toronto, there will be one working group session that will only focus
on any open work items.  Informational exchange will be done outside the
meeting, e.g., on the mailing list or in BOF sessions.


ATM Forum Update - Drew Perkins

Drew Perkins is our new ATM Forum liaison.  The ATM Forum Technical
Committee is divided into a number of working groups:  Physical, LES,
Signalling, B-ICI, Private NNI, Service Aspects and Applications,
Traffic Management, Testing, and Network Management.  UNI 3.0 was
released in the fall.  UNI 3.1 will be released this coming summer/fall.


  o Physical (PHY)

     -  Existing standards:  SONET STS-3c (155 Mbps) over multi-mode
        and single-mode, DS3 (45 Mbps), 100 Mbps TAXI 4B5B, and 155
        Mbps TAXI 8B10B

     -  New standards:  DS1, SONET STS-3c over Cat-5 UTP, and SONET
        STS-1 over Cat-3 UTP

     -  Future standards:  SONET STS-12c (622 Mbps) over fiber/copper


  o Traffic Management (TM)

    ABR/VBR+.  There are two proposals:  rate-based FECN/BECN and
    credit-based per VC link-by-link flow control.  In September 1994,
    a vote will be taken on which scheme, with completion in May 1995.

  o Signalling

    There are three scopes:

     -  UNI 3.1:  alignment with ITU; corrections/typos; due in
         summer/fall 1994

     -  P-NNI Phase 0/1:  symmetric Q.2931 network side procedures

     -  UNI Phase 2 (UNI 4.0?):  group addresses; anycast addresses;
         leaf-initiated join; multipoint-to-multipoint; network layer
         information


  o Private NNI (P-NNI)

     -  Phase 0 (proposal at this time, will be revisited in May)
         * simple symmetric signalling
         * static routes
         * Summer '94
     -  Phase 1
         * link-state based (IS-IS/OSPF)
         * progress on architecture/terms
         * performance metrics TBD---May 1994 meeting
         * will standardize generic call admission control algorithm
           model for metrics
         * hierarchical with arbitrary levels
         * NSAPAs
         * Complete November 1994 vote March 1995


  o Service Aspects and Applications

     -  Committed to new SSCS on top of AAL5
     -  Video/Audio SSCS (VASSCS) based on IETF RTP
         * time base recovery
         * jitter removal
         * bit error detection
         * cell-loss detection

  o Network Management

     -  M1 - private to private
     -  M2 - AToM MIB
     -  M3 - private to public
     -  M4 - public to public
     -  ILMI - clarifications in UNI 3.1, new version object



LAN Emulation - Keith McCloghrie


Keith's presentation slides follow these minutes.  Note that the
presentation covered work in progress.



Conventional IP over ATM Draft Discussion - Masataka Ohta

  o Non Goals
     -  No IP communication over WAN
     -  No LIS
     -  No Large single datalink layer (datalink layer is small in the
        model)

  o Physical Layer
     -  Physical layer can be divided into multiple datalink [regions?]
        over the same datalink layer
     -  Some nodes act as bridges (no IP capability) and routers (with
        IP capability)
     -  With small datalink layer, one can implement broadcast

  o Routing Mechanism
     -  Connectionless packets router:  cell switch connects to routing
        manager
     -  Setting up direct transport connection request/grant protocol
     -  Direct transport connection, cells are forward directly

  o Datalink layer connection
     -  Transport layer connection via direct datalink connections
     -  Performed by protocol done in ATM Forum
     -  Connections done via routers, routers forward cell by cell

  o Comparison to LAN Emulation
     -  Just like IP over Ethernet
     -  Datalink layer broadcast
     -  Packet-wise forwarding (between datalinks only)
     -  No support network layer
     -  No cell-wise forwarding (ATM visible)


Multicast Issues - General Discussion

A discussion was held on the IP multicast to ATM multicast mapping
issue.  There was much discussion on this issue.  A design team has been
formed, lead by Bryan Lyles, to focus on this issue for the Toronto
meeting.  A Bellcore patent on ATM multicast was issued on 1 March 1994.
We are looking into the patent in detail.  Preliminary review indicates
there will not be any conflicts.

A design team will produce a report and possible framework.


Security Issues - General Discussion

  o L3 information in call setup would help ATM Forum.  IETF should be
    responsible for the definition of this information.

  o Need to prevent fraud in the IP<>ATM coupling only.  Must
    guarantee mappings.

  o CERT is interested in call setup.  Extension of information to
    block.


Further discussion will take place on the mailing list to see where we
want/need to take this.


ATM UNI Signalling Support for IP over ATM - Maryann Perez

Maryann's presentation slides follow these minutes.

A sample setup message was presented.

There was much discussion on coding details.  The strong consensus of
the working group was that the current document has the correct scope
and that it should be edited to clarify some issues, and to proceed as
quickly as possible towards turning it into an Informational RFC. Also,
the current document should be written as to not preclude further
follow-on work, e.g., such as tracking advances in ATM Forum
specifications (UNI 3.1) or other related work in this area.

The document will be revised as soon as possible and sent to the list
for discussion.


Attendees

Nashwa Abdel-Baki        [email protected]
Edward Allen             [email protected]
Anthony Alles            [email protected]
Mark Allyn               [email protected]
Steven Andersen          [email protected]
Nutan Behki              [email protected]
Eric Bennett             [email protected]
Lou Berger               [email protected]
Richard Binder           [email protected]
Dana Blair               [email protected]
Kym Blair                [email protected]
Uri Blumenthal           [email protected]
Tony Bogovic             [email protected]
Erik-Jan Bos             [email protected]
Michael Bradley          [email protected]
Scott Brim               [email protected]
Dick Brooks              [email protected]
Al Broscius              [email protected]
Caralyn Brown            [email protected]
Theodore Brunner         [email protected]
Steve Buchko             [email protected]
Carter Bullard           [email protected]
Jerry Burchfield         [email protected]
Brad Burdick             [email protected]
John Carlson             [email protected]
Brian Carpenter          [email protected]
Greg Celmainis           [email protected]
Vinton Cerf              [email protected]
Brett Chappell           [email protected]
David Chen               [email protected]
Ping Chen                [email protected]
Luo-Jen Chiang           [email protected]
Eric Chin-Li-Sun         [email protected]
Bobby Clay               [email protected]
Bob Cole                 [email protected]
Michael Collins          [email protected]
Richard Cornetti         [email protected]
Matt Crawford            [email protected]
David Crowe              [email protected]
Jonathon Crowhurst       [email protected]
Bruce Davie              [email protected]
Farokh Deboo             [email protected]
Michael Elkins           [email protected]
Dario Ercole             [email protected]
Steve Feldman            [email protected]
Dennis Ferguson          [email protected]
Robert Fink              [email protected]
William Fink             [email protected]
H. Tom Fitzpatrick       [email protected]
Shoji Fukutomi           [email protected]
Steve Fulling            [email protected]
Eugene Geer              [email protected]
William Gilliam          [email protected]
Walter Guilarte          [email protected]
Chris Gunner             [email protected]
William Haggerty         [email protected]
Martyne Hallgren         [email protected]
Joel Halpern             [email protected]
Dimitry Haskin           [email protected]
Ken Hayward              [email protected]
Ian Heavens              [email protected]
Juha Heinanen            [email protected]
Greg Hill                [email protected]
Eric Hoffman             [email protected]
John Houlker             [email protected]
David Jacobson           [email protected]
Jeff Johnson             [email protected]
Yasuhiro Katsube         [email protected]
Manu Kaycee              [email protected]
Berry Kercheval          [email protected]
Percy Khabardar          [email protected]
Sun-Kwan Kimn            [email protected]
Jim Knapik               [email protected]
Ted Kuo                  [email protected]
Mark Laubach             [email protected]
John Leong               [email protected]
Ben Levy                 [email protected]
Fong-Ching Liaw          [email protected]
Arthur Lin               [email protected]
Frank Liu                [email protected]
Paul Lu                  [email protected]
Wen-Pai Lu               [email protected]
Carl Madison             [email protected]
Chris Maeda              [email protected]
Jamshid Mahdavi          [email protected]
Andrew Malis             [email protected]
Tracy Mallory            [email protected]
Allison Mankin           [email protected]
Jun Matsukata            [email protected]
Keith McCloghrie         [email protected]
Marjo Mercado            [email protected]
Donald Merritt           [email protected]
David Meyer              [email protected]
William Miskovetz        [email protected]
Julie Myers              [email protected]
Osamu Nakamura           [email protected]
Luc Nguyen               [email protected]
Ngoc-Lan Nguyen          [email protected]
Roxanne Nisbet           [email protected]
William Nowicki          [email protected]
Masataka Ohta            [email protected]
Michael Otto             [email protected]
Maryann Perez            [email protected]
Drew Perkins             [email protected]
James Philippou          [email protected]
J. Mark Pullen           [email protected]
Shahbaz Rahmanian        [email protected]
Murali Rajagopal         [email protected]
K. K. Ramakrishnan       [email protected]
Kenneth Rehbehn          [email protected]
Tony Richards            [email protected]
Robert Roden             [email protected]
Benny Rodrig             [email protected]
Guenter Roeck            [email protected]
Dan Romascanu            [email protected]
Steven Russert           [email protected]
Hal Sandick              [email protected]
Paul Schachter           [email protected]
Sibylle Schaller         [email protected]
Doug Schremp             [email protected]
Dallas Scott             [email protected]
Tim Seaver               [email protected]
Katsuhiro Sebayashi      [email protected]
Isil Sebuktekin          [email protected]
Joshua Seeger            [email protected]
Uttam Shikarpur          [email protected]
David Shur               [email protected]
Walter Sotelo            [email protected]
Ira Steckler             [email protected]
Barbara Sterling         [email protected]
Tim Streater             [email protected]
Mark Swanson             [email protected]
Richard Sweatt           [email protected]
Dan Tappan               [email protected]
Sally Tarquinio          [email protected]
Akihiro Tominaga         [email protected]
Claudio Topolcic         [email protected]
Jerry Toporek            [email protected]
Paul Traina              [email protected]
Willem van der Scheun    [email protected]
Dono van Mierop          [email protected]
Curtis Villamizar        [email protected]
Maria Vistoli            [email protected]
Justin Walker            [email protected]
Glenn Waters             [email protected]
Rick Wilder              [email protected]
Walter Wimer             [email protected]
Linda Winkler            [email protected]
Shian-Tung Wong          [email protected]
Dan Wood                 [email protected]
Shinichi Yoshida         [email protected]
Jeff Young               [email protected]
Chin Yuan                [email protected]

You are viewing proxied material from ftp.icm.edu.pl. The copyright of proxied material belongs to its original authors. Any comments or complaints in relation to proxied material should be directed to the original authors of the content concerned. Please see the disclaimer for more details.