advanced communications technology satellite nasa lewis
TRANSCRIPT
ACTSACTSExperiment 118xExperiment 118x
Where WDM, SONET, ATM, TCP/IP, andWhere WDM, SONET, ATM, TCP/IP, andsatellite technology come togethersatellite technology come together
Advanced Communications Technology SatelliteNASA Lewis Research Center
Cleveland, Ohio
David R. BeeringInfinite Global Infastructures, LLCOn contract to Sterling Software
What is 118x?What is 118x?
n 118x is the latest in a series of “118” experiments,designed to study the optimization of TCP/IP andATM protocols over geostationary distances acrossmultiple operating environments using NASA’sAdvanced Communications Technology Satellite(ACTS)
n Experiment 118j ran from August to November, 1997using and focused on Sun’s Solaris 2.6 TCP/IPimplementation
n Experiment 118x operates during May-September,1998
n The satellite link operates at 622 Mbps (OC-12c)between Livermore, CA and Cleveland, OH
118x Experiment Goal118x Experiment Goal
n To develop a recognized, interoperable, high-performance TCP/IP implementation acrossmultiple computing / operating platformsworking in partnership with the computerindustry
n To work with the satellite industry to answeroutstanding questions regarding the use ofstandards (TCP/IP and ATM) for the deliveryof advanced data services, and for use inspacecraft architectures
118x Experiment Participants118x Experiment ParticipantsGovernment LaboratoriesGovernment Laboratories
n NASA Lewis Research Centern NASA Johnson Space Center (SOMO)n NASA Jet Propulsion Laboratoryn Lawrence Livermore National Laboratory
National Transparent Optical Networking Consortium Lead
n Naval Research Laboratory
118x Experiment Participants118x Experiment ParticipantsCommunications IndustryCommunications Industry
n Ampex Data Systems (DIS-160 Tape Systems)
n Cisco Systems (LS-1010 ATM Switches)
n FORE Systems (ASX-1000 ATM Switches)
n Sprint (Laboratory space, terrestrial network)
118x Experiment Participants118x Experiment ParticipantsComputer IndustryComputer Industry
n Sun Microsystems (Solaris 2.7, Ultra workstations)
n Microsoft (NT 4.0, NT 5.0)
n Digital Equipment (DEC Unix 4.3, DEC Alphas)
n Pittsburgh Supercomputing Center (Integration)
n Intel (Pentium II Development Systems)
n FTP Software (Win95 and Win98 support)
118x Experiment Participants118x Experiment ParticipantsSatellite IndustrySatellite Industry
n Hughes Space & Communicationsn Lockheed Martin Corporationn Space Systems / LORALn Spectrum Astro
Introducing NASA’s AdvancedIntroducing NASA’s AdvancedCommunications TechnologyCommunications Technology
SatelliteSatellite
The world’s best satellite systemThe world’s best satellite systemsimulator!simulator!
Communications Satellite ModelCommunications Satellite Model
Balanced LinkHigh
Data Rates155/622 Mbps
Any aggregate rate
Remote Hub orRemote
(Hubless)
ACTSKa-Band
Relay Satellite ModelRelay Satellite Model
Return LinkVery High
Data Rates1 to 622 Mbps
Forward LinkLow to Moderate
Data Rates1 to 20 MbpsRemote Hub
ACTSKa-Band
Digital Broadcast Satellite (DBS) ModelDigital Broadcast Satellite (DBS) Model
SatelliteReturn Link
1 to 622 Mbps
Remote Hub
ACTSKa-Band
TerrestrialForward Links1 to 20 MbpsUsing NREN
118x End-to-end Network Layout118x End-to-end Network LayoutNASA
Advanced CommunicationsTechnology Satellite
ATMSwitch
SUNSolaris
OC-12SONET
622ATMMM
ATMSwitch
SUNSolaris
622ATMSM
622ATMMM
FWD/SCSI AmpexDIS160
622 MbpsLink
Sprint AdvancedTechnology Laboratory
NASALewis Research Center
Cleveland, Ohio
DECUnix
MicrosoftNT
BSDRef
DECUnix
MicrosoftNT
BSDRef
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
AmpexDIS160
FWD/SCSI
High-Speed Magnetic Tape TestHigh-Speed Magnetic Tape Test
NASAAdvanced Communications
Technology Satellite
ATMSwitch
SUNUltra 2
622ATMSM
622ATMMM
FWD/SCSIAmpexDIS160
ATMSwitch
SUNUltra 2
622ATMSM
622ATMMM
FWD/SCSI AmpexDIS120
622 MbpsLink
SprintAdvanced Technology Lab
Burlingame, CA
NASALewis Research Center
Cleveland, Ohio
End-to-end Demonstration Layout at SC97End-to-end Demonstration Layout at SC97NASA
Advanced CommunicationsTechnology Satellite
FOREASX1000
SUNUltra 2
OC-12SONET
622ATMMM
FWD/SCSIAmpexDST812
w/
FourDrives
FOREASX1000
SUNUltra 2
622ATMSM
622ATMMM
FWD/SCSI AmpexDIS120
622 MbpsLink
San JoseConvention Center
NASALewis Research Center
Cleveland, Ohio
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
SUNUltra 2
SUNUltra 2
FWD/SCSI
FWD/SCSI
FWD/SCSI
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
End-to-end Demonstration Layout at SC97End-to-end Demonstration Layout at SC97NASA
Advanced CommunicationsTechnology Satellite
FOREASX1000
SUNUltra 2
OC-12SONET
622ATMMM
FWD/SCSIAmpexDST812
w/
FourDrives
FOREASX1000
SUNUltra 2
622ATMSM
622ATMMM
FWD/SCSI AmpexDIS120
622 MbpsLink
San JoseConvention Center
NASALewis Research Center
Cleveland, Ohio
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
SUNUltra 2
SUNUltra 2
FWD/SCSI
FWD/SCSI
FWD/SCSI
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
520 MbpsSingle Stream
End-to-end Demonstration Layout at SC97End-to-end Demonstration Layout at SC97NASA
Advanced CommunicationsTechnology Satellite
FOREASX1000
SUNUltra 2
OC-12SONET
622ATMMM
FWD/SCSIAmpexDST812
w/
FourDrives
SecantCellCase
155ATMMM
NSCAtlas
155ATMMM
FOREASX1000
SUNUltra 2
622ATMSM
622ATMMM
FWD/SCSI AmpexDIS120
SecantCellCase
155ATMMM
NSCAtlas
155ATMMM
622 MbpsLink
San JoseConvention Center
NASALewis Research Center
Cleveland, Ohio
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
FWD/SCSI AmpexDIS120
SUNUltra 2
SUNUltra 2
SUNUltra 2
FWD/SCSI
FWD/SCSI
FWD/SCSI
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
360 MbpsAggregate
118x Double-Hop End-to-end Network Layout118x Double-Hop End-to-end Network LayoutNASA
Advanced CommunicationsTechnology Satellite
ATMSwitch
OC-12SONET
155/622ATMMM
ATMSwitch
622ATMSM
622 MbpsLink
Sprint AdvancedTechnology Laboratory
NASALewis Research Center
Cleveland, Ohio
MicrosoftNT
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
PHYSICALLOOPBACK
Two devices at NASA LeRCcommunicate with each other through
a physical loopback at the far end. Thishas the effect of doubling the roundtrip
delay between them
SUNSolaris
118x Double-Hop End-to-end Network Layout118x Double-Hop End-to-end Network LayoutNASA
Advanced CommunicationsTechnology Satellite
ATMSwitch
OC-12SONET
155/622ATMMM
ATMSwitch
622ATMSM
622 MbpsLink
Sprint AdvancedTechnology Laboratory
NASALewis Research Center
Cleveland, Ohio
MicrosoftNT
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
PHYSICALLOOPBACK
Two devices at NASA LeRCcommunicate with each other throughthe physical loopback at Sprint. This
has the effect of doubling the roundtripdelay between them
SUNSolaris
536 ms
118x Double-Hop End-to-end Network Layout118x Double-Hop End-to-end Network LayoutNASA
Advanced CommunicationsTechnology Satellite
ATMSwitch
OC-12SONET
155/622ATMMM
ATMSwitch
622ATMSM
622 MbpsLink
Sprint AdvancedTechnology Laboratory
NASALewis Research Center
Cleveland, Ohio
MicrosoftNT
NTON
OC-12SONET
Lawrence LivermoreNational Laboratory
PHYSICALLOOPBACK
Two devices at NASA LeRCcommunicate with each other throughthe physical loopback at Sprint. This
has the effect of doubling the roundtripdelay between them
SUNSolaris
536 ms + 536 ms = 1072 ms
118x Plans118x Plans
n Complete first phase workplan by end ofSeptember, 1998
n Demonstrate - demonstrate - demonstraten Leverage relationships and technology base
to further the state-of-the-art in high-speedsatellite applications using standard protocols
n Apply the technology to NASA’s unique datahandling problems using TDRSS
n Leverage the architecture for spacecommercialization
Industry ChallengesIndustry Challenges
n Incorporate error-recovery techniques (likethose found in SCPS) into TCP/IP
n Demonstrate these capabilities to broaderaudiences
n Implement the technology to lower the cost ofbuilding and delivering advanced applications