A LOCAL AREA NETWORK RECONFIGURATION ANALYSIS TOOL

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N/A
Agency Tracking Number: 9388
Amount: $58,082.00
Phase: Phase I
Program: SBIR
Awards Year: 1989
Solitcitation Year: N/A
Solitcitation Topic Code: N/A
Solitcitation Number: N/A
Small Business Information
Advanced System Technologies
12200 E Briarwood Ave - Ste 26, Englewood, CO, 80112
Duns: N/A
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 William F Dudzik
 (703) 845-0040
Business Contact
Phone: () -
Research Institution
N/A
Abstract
TWO LOCAL AREA NETWORK (LAN) STANDARDS, IEEE 802.5 AND ANSI X3T9.5 FFDDI, HAVE SEEN INCREASED USE AMONG BOTH MILITARY AND INDUSTRIAL USERS ESPECIALLY FOR APPLICATIONS WHICH HAVE TIME-CRITICAL PERFORMANCE REQUIREMENTS. THESE STANDARDS ARE THE BASIS OF PROPOSED NAVY STANDARDS, DESIGNATED SAFENET-I AND SAFENET-II. IN THE EVENT OF A FAILURE, A KEY PERFORMANCE PARAMETER ESSENTIAL TO DESIGNERS OF TIME-CRITICAL APPLICATIONS IS THE CAPACITY OF THESE PROTOCOLS TO RECONFIGURE THE NETWORK IN A PREDICTABLE AMOUNT OF TIME. CONSEQUENTLY, THERE IS A NEED TO DEVELOP A HIGHLY ACCURATE TOOL FOR ANALYZING AND THEN OPTIMALLY FINE-TUNING LOCAL AREA NETWORK RECONFIGURATION TIMES IN RESPONSE TO VARIOUS FAILURE SCENARIOS. THE ULTIMATE GOAL OF THE PROPOSED RESEARCH IS THE DEVELOPMENT OF SUCH A TOOL. THE TOOL WILL CONSIST OF A FIMULATION MODEL IMPLEMENTED ON A PARALLEL PROCESSOR AND A SIMULATED ANNEALING OPTIMIZATION TECHNIQUE. THE MAJOR INNOVATION IN THE PROPOSED RESEARCH IS THE UNIQUE INTEGRATION OF GRAPHICAL REPRESENTATION OF NETWORKS, DISTRIBUTED SIMULATION USING ADAPTIVE TIME WARP, AND A TECHNIQUE FOR DETERMINING SETS OF NETWORK PARAMETER VALUES WHICH MINIMIZE LAN RECONFIGURATION TIMES. SATISFYING TWO TECHNICAL OBJECTIVES WILL DEMONSTRATE THE TECHNICAL FEASIBILITY OF THE PROPOSED APPROACH: (1) DESIGNING A SIMULATION MODEL THAT ACCURATELY AND EFFICIENTLY ESTIMATES THE NETWORK RECONFIGURATION TIME IN RESPONSE TO VARIOUS TYPES OF NETWORK FAILURE SCENARIOS AND (2) DEVELOPING A TECHNIQUE THAT GUIDES THE NETWORK DESIGNER TOWARDS A DESIGN THAT MINIMIZES RECONFIGURATION TIME SUBJECT TO VARIOUS CONSTRAINTS.

* information listed above is at the time of submission.

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