Transcript Document

National and International Networking
Infrastructure and Research
June 13, 2003
Mari Maeda
NSF/CISE/ANIR
Infrastructure that enables:
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Scientific research
Education and training
Experimentation and strategic deployment to advance
and introduce new networking capability
Infrastructure/Infrastructure-enhancing
Investments:
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International Networks
High-Performance Network Connections (HPNC)
Optical Networking
Enhanced E2E networking protocols
Middleware
Network-stressing applications, collaborative apps, …
Network Research Testbeds
Advanced Network Infrastructure
•What is the objective of the network?
(needs that cannot be served by Internet
or other research/education networks)
•What community or communities are being
served? What research is enabled?
•What network performance metrics are used
and monitored?
•Usage?
•What is the use/participation policy?
(some examples: abilene, cenic, bossnet,
atdnet)
International Networks (1997-2004)
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STAR TAP /STAR LIGHT: Univ of Illinois at
Chicago
Interconnect point for Abilene, Esnet, DREN, NREN, AMPATH,
CA*NET4, SURFnet(Netherlands), NORDUnet, CER,
TransPAC/APAN, NaukaNET, Asnet (Taiwan)
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TransPAC: Indiana University
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Euro-Link: University of Illinois at Chicago;
Netherlands, France, Israel, Nordic.
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MIRnet/Russia: University of Illinois (NCSA)
Euro-Link
• Euro-Link originally DS-3s from STAR TAP to France,
Israel, Netherlands and Nordic countries
Today
•OC192 to Netherlands
•OC48 + OC12 to CERN
•(Nordic at OC-3)
•(France at OC-3)
•(Israel - now uses GEANT)
Summer 2003
•OC192 +OC192 to Netherlands
•OC192 + OC12 to DOE
•partly carrying Abilene and
CAnet4 production transport
between Chicago and
Amsterdam)
Current TransPAC Network
OC-12 POS between Tokyo and Seattle
OC-12 ATM between Tokyo and Chicago
•Expand Tokyo-Chicago link (OC-48)
•Shift from ATM to POS on Tokyo-Chicago link
•Eliminate Tokyo-Seattle link (cost considerations)
OC-48
Infrastructure/Infrastructure-enhancing
Investments -- beyond raw connectivity and
high-speed
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International Networks
High-Performance Network Connections (HPNC)
Enhanced E2E networking protocols
Optical Networking
Middleware Research and Deployment
Network-stressing applications
Network Research Testbeds
Traditional VLBI
The Very-Long Baseline
Interferometry (VLBI)
Technique
(with traditional data recording
on magnetic tape or disk)
ASTRONOMY
• Highest resolution technique available to
astronomers – tens of microarcseconds
• Allows detailed studies of the most distant
objects
GEODESY
• Highest precision (few mm) technique
available for global tectonic measurements
• Highest spatial and time resolution of
Earth’s motion in space for the study of
Earth’s interior
•Earth-rotation measurements important
for military/civilian navigation
•Fundamental calibration for GPS constellation
within Celestial Ref Frame
Scientific Advantages of e-VLBI (real -time)
• Bandwidth growth potential for higher sensitivity
– VLBI sensitivity (SNR) proportional to square root of Bandwidth
resulting in a large increase in number of observable objects
(only alternative is bigger antennas – hugely expensive)
– e-VLBI bandwidth potential growth far exceeds recording capability
(practical recordable data rate limited to ~1 Gbps)
• Rapid processing turnaround
– Astronomy
• Ability to study transient phenomena with feedback to steer observations
– Geodesy
• Higher-precision measurements for geophysical investigations
• Better Earth-orientation predictions, particularly UT1, important for
military and civilian navigation
Elements of e-VLBI Development
• Phase 1: Develop eVLBI-compatible data system
– Mark 5 system development at MIT Haystack Observatory being supported by
NRAO, NASA, USNO plus four international partners
– Prototypes now deployed in U.S. and Europe
• Phase 2: Demonstrate 1 Gbps e-VLBI using Boston-DC link
– ~700km link between Haystack Observatory and NASA/GSFC
– First e-VLBI experiment achieved ~788Mbps transfer rate
• Phase 3: Develop adaptive network protocol
(ANIR STI grant to Haystack Observatory; collaboration with MIT Lab for Computer
Science and MIT Lincoln Laboratory);
– New IP-based protocol tailored to operate in shared-network ‘background’ to
efficiently using available bandwidth
– Demonstrate on national and international networks
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Phase 4: Extend e-VLBI to national and global VLBI community
Westford-to-Kashima e-VLBI experiment
• Westford/Kashima experiment conducted on 15 Oct 02
– Data recorded on K5 at Kashima and Mark 5 at Westford at 256
Mbps
– Files exchanged over Abilene/GEMnet networks
• Nominal speed expected to be ~20 Mbps, but achieved <2 Mbps for
unknown reasons - investigating
– File formats software translated
– Correlation on Mark 4 correlator at Haystack and PC Software
correlator at Kashima
– Nominal fringes obtained
– Further experiments are anticipated
Networking Research Testbeds (NRT)
•Networks that are designed and built by networking
researchers for the purpose of advancing networking
research.
•Fully controlled experimental environment.
•Demonstration of prototype network sw/hw.
•Deployment of experimental platform, benchmark suite,
tools (traffic generators, configuration and deployment
tools) integration with simulation and emulation systems.
•Research examples:
-network security (DDOS/worm attack defense)
-wireless networking (MANET benchmarking, sensor
networking)
-new generation of optical networking techniques
-overlays (e.g. PLANETLAB)
iGrid 2002
September 24-26, 2002, Amsterdam, The Netherlands
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16 countries: Australia, Canada, CERN/Switzerland, France, Finland, Germany, Greece, Italy,
Japan, Netherlands, Singapore, Spain, Sweden, Taiwan, UK, US
Applications demonstrated: art, bioinformatics, chemistry, cosmology, cultural heritage,
education, high-definition media streaming, manufacturing medicine, neuroscience, physics,
tele-science
Grid technologies demonstrated: Major emphasis on grid middleware, data management
grids, data replication grids, visualization grids, teleimmersion grids, data/visualization grids,
computational grids, access grids, grid portals
• 25Gb transatlantic bandwidth (100Mb/attendee, 250x iGrid2000! )
www.startap.net/igrid2002