97S-SIW-119

Emulation of Reliable Multicast, with Discovery Service, in the prototype implementation 
of the HLA RTI for STOW.

Name: Harry Wolfson, Steve Boswell, Steve McGarry, Dan Van Hook
Organization:  MIT Lincoln Laboratory
Address:  244 Wood Street, Lexington, MA 02173
Email:  HarryWolfson@LL.MIT.EDU
Phone (commercial and dsn):  617.981.5996
Fax:  617.981.7455

Target group of paper proposal/abstract:  run-time infrastructure forum.

ABSTRACT
The High Level Architecture (HLA) Runtime Infrastructure (RTI) provides a
variety of message Transport Services for different communication needs.
These Transport Services include Best Effort, State Consistent, Minimum
Rate and Reliable. A Reliable Message Transport Service requires an
implementation of a reliable multicast protocol. This paper will briefly
describe various reliable multicast technologies, while focusing on the
emulation that was chosen for the prototype implementation of the HLA RTI
for STOW.

The Discovery Service is a mechanism for allowing distributed clients and
providers of an arbitrary service to locate one another dynamically. The
RTI's Reliable Service makes use of Discovery to allow Reliable message
clients to find and connect to Reliable Distributor servers; and to allow
the servers to find and connect to each other.

This paper will describe the implementation of the Reliable and Discovery
Services in the prototype HLA RTI for STOW, as well as a description of the
API's for simulation designers.