Update on German Network for Research

1
Update on German Network forResearch Education

• Martin Wilhelm
• DFN, Germany
• wilhelm_at_dfn.de
• October 2002

2
Contents

• DFN association targets, objectives, finance
• Today's technical platforms and services
• Example of successful internat. collaboration
• What is next?

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Targets of DFN association

• Higher Education and Research (universities,
  research institutes)
• Institutions with close relationship to the
  research and education community
• Research departments of industry
• Government agencies

4
Objectives of DFN association

• Provision of nat. and internat. connectivity by
  means of a leading edge infrastructure (G-Win)
• Bundling community requirements
• Testbeds for next generation network technologies
• Promotion of new applications
• Organization for international collaboration

5
Finance of DFN association

• non-profit organization
• federal government subsidizes start-up
• Operational costs (capacity, equipment,
  personnel, services ...) must be fully covered by
  income ? charges for services

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Transport Platform

• Toolkit of SDH/WDM lines from Dt. Telekom
  configurable topology, increasing bandwidth
• 27 network nodes operated by DFN
• Used for IP, ATM, GigE links, DFNVC, ...
• Automatic SLA evaluation of 15min BER

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G-WiN Todays Topology
Rostock
Core Node 10 Gbit/s 2,4 Gbit/s 2,4 Gbit/s 622
Mbit/s as of October 2002
Kiel
Hamburg
Global Upstream
Oldenburg
Braunschweig
Hannover
Berlin
Magdeburg
Bielefeld
Essen
Göttingen
Leipzig
St. Augustin
Dresden
Marburg
Ilmenau
Aachen
Würzburg
Topology computed, based on Operations Research
methods. Optimised for low hopcount, low cost,
high resilience by use of actual traffic matrices
Frankfurt
Erlangen
Heidelberg
GEANT
Karlsruhe
Regensburg
Kaiserslautern
Stuttgart
Garching
Augsburg
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Structure of Routers
CR
CR
CR
AR
ar
ar
AR
Level-1 node
Level-2 node
Level-2 node
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Some figures of DFN Internet

• approx. 600 connected sites
• 800 TB/month network throughput
• 95 of all traffic is IP
• traffic doubles every year
• Global Upstream 5 Gigabit/s
• connected to GTREN _at_ 2,5 Gigabit/s via GEANT

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Problem tracking at a G-WiN core node
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Services provided

• DFNIP IP-service (national, international,
  NREN-to-NREN as well as Global Upstream)
• DFNConnect Point-to-point within network
• DFNATM Legacy ATM
• DFNVC Managed Video Conference Service
• DFN_at_home Dial-in (ISDN, xDSL) with pro-vision of
  IP-addresses from home institution

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Collaboration Duke University - DFN
Telepresence across Internet2 networks (details
at http//www.fuqua.duke.edu/admin/it/telepres.htm
) Global Conference System, connecting Durham, NC
and Frankfurt, Germany. No noticeable latency,
video and audio in perfect synch
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Electronic Ribbon Cutting Procedure
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What is next?
2003 More 10 G links in core 2004 Call for
tender new transport platform Growing demand
for real-time services Interworking optical layer
/ IP ? New applications and services