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etomic: a pan - European testbed. Péter Hága Collegium Budapest Institute for Advanced Study. History. The E uropean T raffic O bservatory M easurement I nfrastru C ture (etomic) was created in 2004-05 within the Evergrow Integrated Project. - PowerPoint PPT Presentation
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etomic: a pan-European testbed
Péter Hága Collegium Budapest
Institute for Advanced Study
ETOMIC the European Internet experimentation infrastructure www.etomic.orgBest Testbed Award
• The European Traffic Observatory Measurement InfrastruCture (etomic) was created in 2004-05 within the Evergrow Integrated Project.
• Since 2005 it is also part of a national programme
Center for Comm. Net. Data Analysis ( ~ 3 M€) • Its goals:
– to provide open access, public testbed for researchers experimenting the Internet
– to serve as a Virtual Observatory active measurement data on the European part of the Internet
History
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Founders
• Built by the Center for Communication Network Data Analysis (CNDA).
• Central management system by Navarra University, Spain
• The measurement stations are hosted by European Universities in the Evergrow project, EuroLab members, MoMe members, associate partners of CNDA
Experimental sites
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Eurolabs Collaboration
• an etomic station is hosted in the Eurolabs laboratory in Brussels
• the etomic station arrived at Université Libre de Bruxelles in the summer of 2005
• reached the fully operational state in the autumn of 2005
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Eurolabs Collaboration
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Eurolabs Collaboration
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Hardware architecture
• Each station consists of:– Server PC architecture– DAG 3.6 GE card with packet
sending capability (Endace)– own GPS antenna (Garmin) for
time synchronization
• Repository and data processing:– Everlab IBM blade center (112
blades)
ETOMIC the European Internet experimentation infrastructure www.etomic.org
The GEANT connection
ETOMIC the European Internet experimentation infrastructure www.etomic.org
CMS
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Web interface
• Available via www.etomic.org– Account application -> own experiment design– Free access/sharing of measurement data
• Experiment time slot reservation for registered users
• Programming DAG card via the user friendly Application Programming Interface
• Experiments are distributed automatically to the stations
What kinds of services I can get?
Launch an experimentstep by step
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Experimental bundle
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Scheduling
Experiments
Time slot reservation in a calendar system for the experiments
ETOMIC the European Internet experimentation infrastructure www.etomic.org
User experiments
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Open repository
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Database interface and schema
Uploaded 2.5 billion measurements
In collaboration with astrophysics Virtual Observatory efforts
You can get all the key environment information during
your experiment
Basic experiments
ETOMIC the European Internet experimentation infrastructure www.etomic.org
One way delay
~ 10 ns measurement precision
Online demo:One-way delay measurement between two Etomic nodes
Define and launch the experiment
ETOMIC the European Internet experimentation infrastructure www.etomic.org
GPS visibility information
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Tracking topology changes
Experimental use cases
Some ongoing topics
ETOMIC the European Internet experimentation infrastructure www.etomic.org
1. Testing a new available
bandwidth meter• Upload your
available bandwidth meter via the web interface. Deploy it to the sites of your choice. Book measurement time and schedule your experiment.
ETOMIC the European Internet experimentation infrastructure www.etomic.org
2. Transport protocol testing
• Upload a new protocol version as an experiment and test it in real Internet + custom designed cross traffic
ETOMIC the European Internet experimentation infrastructure www.etomic.org
3. Network Tomography
Method: we send back-to-back packet pairs and measure their end-to-end delay at arrival with very high precision
Goal: to resolve delay statistics on internal network segments too, where we do not have monitoring stations
Key idea: delay correlation on the common segment for the packets in a pair
ETOMIC the European Internet experimentation infrastructure www.etomic.org
Google Map visualization tool
Online demo:One-way delay measurement between two Etomic nodes
Check the experiment, plot the results
Thank you for your attention!
Visit: www.etomic.org