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CEOSnet Update
WGISS Infrastructure Task Team
(WITT)
Dave Hartzell, NASA Ames / CSC
WGISS-20
September 12 - 16 2005
Kiev, Ukraine
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CEOSnet
• CEOSnet is a virtual network organization;– Utilizes existing government and academic
networks.
• Intended to support CEOS/WGISS related network activities.
• Network performance monitoring was a critical component of CEOSnet.
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CEOSnet Monitoring
• CEOSnet monitoring gives indications of application-level performance.
• Network performance is tested between CEOSnet hosts throughout the world on various networks.– Performance is impacted by:
• Delay (round-trip times, distance);• Congestion (packet loss);• CEOSNet host configuration.
• Monitoring is done by the NASA Ensight system; – Andy Germain, GSFC / Swales Aerospace.
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Ensight
• The NASA Ensight system was developed by EOS to passively and actively monitor and record historical network performance;
• Ensight (for CEOS) available at:http://ensight.eos.nasa.gov/
Organizations/ceos/index.shtml
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Throughput History
Packet Loss
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Router “hops”
Round-trip times, in milliseconds
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Testing Matrix
• Testing can be configured between CEOSnet test hosts.
• Currently a full-matrix is not configured.• Please contact myself or Mr. Andy
Germain to add hosts or test matrices.– [email protected]– [email protected]