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Large Scale Multicast Applications (lsma)
-----------------------------------------
Charter
Last Modified: 29-Oct-97
Current Status: Active Working Group
Chair(s):
Jon Crowcroft <jon.crowcroft@cs.ucl.ac.uk>
Michael Myjak <myjak@ist.ucf.edu>
Applications Area Director(s):
Keith Moore <moore+iesg@cs.utk.edu>
Harald Alvestrand <Harald.T.Alvestrand@uninett.no>
Applications Area Advisor:
Keith Moore <moore+iesg@cs.utk.edu>
Technical Advisor(s):
Allison Mankin <mankin@isi.edu>
Mailing Lists:
General Discussion:lsma@gmu.edu
To Subscribe: lsma-request@gmu.edu
Archive:
Description of Working Group:
Note: Allyn Romanow <allyn@eng.sun.com> is also an Area Technical
Advisor.
This group focuses on the needs of applications that require real-time
or near real-time communications to support a large number of
simulation processes (virtual entities). These applications have been
analyzed by the U.S. Department of Defense to require IP multicast
support for 10K simultaneous groups, for upwards of 100K virtual
entities in a global sized WAN by the year 2000.
The concrete example application is the Distributed Interactive
Simulation work of the DIS Interoperability and Standards workshops and
standardized as IEEE 1278 - 1995.
The concrete example application is the Distributed Interactive
Simulation work of the DIS Interoperability and Standards workshops and
standardized as IEEE 1278 - 1995. Future simulation implementations
will use the High Level Architecture (HLA) work sponsored by the U.S.
Defense Modeling and Simulation Office, and which is currently being
standardized by the newly formed Simulation Interoperability Standards
Organization (SISO).
The WG aims to provide documentation on how the IETF multicast
protocols, conference management protocols, transport protocols and
multicast routing protocols are expected to support the example
application. The result of this WG will be two Informational documents
that we hope will be used as input and advice by a number of IETF
working groups, among them IDMR, ION, MBONED, MMUSIC, and by working
groups being developed on Reliable Multicast Applications and QOS
Routing.
The document editors for the informational documents will be Steve
Seidensticker for "Scenarios" and Mark Pullen for "Limitations".
The Scenarios document will describe the environment in which
distributed simulation applications operate. It will provide realistic
example scenarios of small, medium and large simulation exercises. The
Limitations product will document the limitations of current IETF
products as they pertain to distributed applications. This document
will offer concise examples of how distributed applications demonstrate
these limitations and to the extent possible, offer potential solutions
to the identified limitations.
The documents will attempt to provide specific numbers for the demands
placed on protocol or infrastructure, and for the limits that protocols
impose on the applications.
The group will assess the need for new protocols to support the
requirements it identifies, and the Limitations document will report on
this assessment. One recommendation it expects to document is for
development of a virtual reality transfer protocol.
Goals and Milestones:
Dec 96 Meet at San Jose IETF review charter, review initial drafts of
Scenarios and Limitations documents
Mar 97 Substantially complete internet-drafts ready for review; work
will be presented in Spring SISO workshop for feedback.
May 97 Internet-drafts ready for WG Last Call
Jun 97 Close group.
Jun 97 Submit documents to the IESG for publication as Informational
documents.
Internet-Drafts:
Posted Revised I-D Title <Filename>
------ ------- ------------------------------------------
Nov 96 Jul 97 <draft-ietf-lsma-scenarios-01.txt>
Scenarios and Appropriate Protocols for Distributed Interactive
Simulation
Nov 96 Mar 97 <draft-ietf-lsma-limitations-01.txt>
Limitations of Internet Protocol Suite for Distributed
Simulation in the Large Multicast Environment
Jul 97 New <draft-ietf-lsma-requirements-00.txt>
Taxonomy of Communication Requirements for Large-scale
Multicast Applications
Request For Comments:
None to date.