Bandwidth Reduction Techniques Used in DIS Exercises

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Bandwidth Reduction Techniques Used in DIS
Exercises
THIS PRESENTATION IS UNCLASSIFIED AND CLEARED FOR
PUBLIC RELEASE

• Joe Sorroche
• ASRCC DMOC Exercise Engineer
• Phone [phone]
• Email joe.sorroche _at_kirtland.af.mil

Jerry Szulinski LMC DMOC System Engineer Phone
505-853-0252 Email jerry.szulinski
_at_kirtland.af.mil
THIS PRESENTATION IS UNCLASSIFIED AND CLEARED FOR
PUBLIC RELEASE
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Outline

• Introduction
• DMOC Introduction/Description
• Desert Pivot Network Description
• Problem Definition
• Bandwidth Reduction Techniques
• Network Rules
• DIS Filter Analyzer
• DMOC Software Router

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DMOC

• Distributed Mission Operations Center
• Formerly Theater Aerospace Command and Control
  Simulation Facility
• Air Forces Distributed Center of Excellence
• Conducts and participates in several distributed
  exercises each year
• Desert Pivots, Blue Flags, Roving Sands, JEFX,
  Millennium Challenge, etc.
• Virtual and Constructive simulators

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Desert Pivot Network Description

• Data Links
• T-1 1.5 Mbits/sec bandwidth
• Gaurdnet, 750 Kbits/sec
• DREN ATM Cloud
• DMOC Network
• Air WAN
• Ground LAN
• DFA is between Ground and Air LANs
• Desert Pivot Scenario Size
• About 400 600 Air Entities
• About 3,000 7,000 Ground Entities
• Data Protocols
• DIS, SAR, NATO EX, TADIL J, TIBS.
• The Need for Bandwidth Reduction is apparent!

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Desert Pivot Network Description
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Bandwidth Reduction Techniques

• Simple Bandwidth Rules
• DIS Filter Analyzer (DFA)
• DMOC Software Router (DSR)

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Bandwidth Rules

• Only exercise data (DIS/NATO-EX/etc.) during the
  exercise
• No File Transfers during exercise
• Maximize bandwidth by adjusting DIS Protocol Data
  Unit (PDU) update rates
• No remote terminal activity on the exercise
  networks
• Simulation Management PDUs transmitted on local
  LANs
• Tactical data transmission on STU IIIs

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DIS Filter Analyzer (DFA)

• DFA Description
• Linux platform
• Software application reads DIS PDUs and
  determines if PDU passes or fails filter criteria
  set by the user.
• DFA receives DIS traffic from two separate DIS
  LANs
• Filter criteria are applied to PDUs as they are
  read

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DFA Capabilities

• Filtering Capabilities
• Exercise Identification (ID)
• PDU Type enabled filter (Entity State Fire
  Detonation Signal Start/Stop etc.)
• Allow/Deny by Site/App/Entity
• Allow/Deny by DIS Enumeration
• Interactions (Fire/Detonation/etc. PDU) from
  denied enumeration are also denied

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DFA Capabilities (Cont)

• Range filter
• Spherical range filters
• Allow Entity State PDUs within a range of a
  selected Site/App/Entity ID, or a specific
  latitude/longitude/altitude location
• Control amount of high fidelity data allowed onto
  a LAN

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DFA Applications

• Filters DIS Data configuration set by user
• Regions
• Range filters are set to radar ranges of the
  simulators
• Simulator Data Processing Limit
• Limit amount of DIS processing for simulators
• Analyzes DIS Data
• Displays DIS PDUs (text format) and source
• Can detect and filter bad data sent from a site
  or simulator

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Software Router Overview

• DMOC Software Router (DSR) is a transport utility
  (not related to OSI)
• Minimal impact on existing sites and systems
• Fixed bandwidth limitation
• Non-uniform bandwidth load
• Support for all UDP-based broadcast data
• DIS
• NATO-EX
• SAR images
• Free text messages
• Voice over IP

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Software Router Overview
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Software Router Implementation

• GNU/Linux platform
• Deployability
• Remote operation
• Low cost
• Data metering and buffering
• Maximum packets per second
• Maximum bytes per second
• Packet priority
• Multicast ensures a single copy of data on a
  network

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Software Router Details

• Configuration
• Local routes
• Remote (bridging) route
• FIFO size
• Maximum bytes per second
• Maximum packets per second
• Debug level
• Network utilization and health monitoring

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QUESTIONS