etomic: a pan - european testbed

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