Targeting Ada95/DSA for distributed simulation of multiprotocol communication networks

ABSTRACT

This paper describes the use of Ada95/DSA as middleware for modeling network's entities into distributed objects which can be used for both distributed execution and simulation without transformation of the model. First, general issues of simulation of network's entities are briefly presented. Then, the paper shows how DSA features are used to abstract these entities in a manner as they can be executed or simulated on a cluster of workstations. The DSA based model of distributed simulation is built on a combination of two kinds of classes: the first one support general purpose of distributed objects computing and the second deal with the development of distributed network elements. To illustrate the feasibility of this approach, a partial implementation of classes that have been used to model routers running a subset of border gateway protocol (BGP) is presented.

REFERENCES

• 1: Albert Y. H. Zomaya, Parallel and distributed computing handbook, McGraw-Hill, Inc., New York, NY, 1996
• 2: Bruce Powel Douglass, Doing hard time: developing real-time systems with UML, objects, frameworks, and patterns, Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1999
• 3: Grady Booch, James Rumbaugh, Ivar Jacobson. The Unified Modeling Language. Addison-Wesley ISBN 0-201-57168-4.
• 4: http://www.ssfnet.org
• 5: http://www-comm.itsi.disa.mil/atmf/pnni.html
• 6: ISO Information Technology - Programming Language- Ada ISO /IEC/ANSI 8652 :1995.
• 7: Java Remote Method Invocation Specification. JavaSoft, revision 1.50, JDK1.2
• 8: Kalyan Perumalla, Richard Fujimoto, Andrew Ogielski MetaTeD: A Meta Language for Modeling Telecommunication Networks. GIT-CC-96-32, Technical Report, College of Computing, Georgia Institute of Technology, 1997.
• 9: Laurent Pautet, Samuel Tardieu. Glade User Guide May 2000 ftp://ftp.cs.nyu.edu
• 10: Laurent Pautet , Thomas Quinot , Samuel Tardieu, CORBA & DSA: Divorce or Marriage?, Proceedings of the 1999 Ada-Europe International Conference on Reliable Software Technologies, p.211-225, June 07-11, 1999
• 11: Laurent Pautet , Thomas Quinot , Samuel Tardieu, CORBA and CORBA services for DSA, Proceedings of the 1999 annual ACM SIGAda international conference on Ada, p.31-38, October 17-21, 1999, Redondo Beach, California, United States
• 12: Object Management Group (1998c). The Common Object Request Broker: Architecture and specification revision 2.2 492 Old Connecticut Path, Framingham, MA 01701, USA
• 13: RFC1776 Border Gateway Protocol version 4
• 14: RFC 2328 OSPF2
• 15: RFC2676 QoS Routing mechanisms and OSPF extensions.
• 16: RFC 3031 Multiprotocol Label Switching Architectures.
• 17: Richard Stevens TCP/IP Illustrated. Volume 1 Addison-Wesley 1994.
• 18: Using the Border Gateway Protocol for Interdomain Routing http://www.cisco.com/univerced/cc/td/doc/cisintwk/ics/icsbgp4.htm
• 19: Yvon Kermarrec, CORBA vs. Ada 95 DSA: a programmer's view, Proceedings of the 1999 annual ACM SIGAda international conference on Ada, p.39-46, October 17-21, 1999, Redondo Beach, California, United States

INDEX TERMS

Primary Classification:
  D. Software
  D.3 PROGRAMMING LANGUAGES
      D.3.2 Language Classifications

          Nouns: Ada

Additional Classification:
  C. Computer Systems Organization
  C.2 COMPUTER-COMMUNICATION NETWORKS
      C.2.1 Network Architecture and Design
          Subjects: Distributed networks

General Terms:
Algorithms, Languages

Keywords:
Distributed system annex, distributed networking protocols, distributed objects engineering, distributed simulation