1. www.seeren.org SEEREN The SEEREN initiative is co-funded by the European Commission under the FP5 contract IST-2001-38830 A regional MPLS-based network in SE Europe Jorge-A. Sanchez-P., Constantinos Kotsokalis - GRNET Konstantinos Anagnopoulos, Panagiota Bosdogianni - ISTF

2. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 2 Introduction SEEREN: South-Eastern European Research and Education Network Built in 2003, operates through 2004 Funded by the E.C. under IST programme Consortium includes: GRNET, HUNGARNET/NIIF, RoEduNet, INIMA, BIHARNET, ISTF (formerly ICTDA), MARNET, AMREJ, DANTE, TERENA http://www.seeren.org

3. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 3 Objective Ease the digital divide Connect beneficiaries to GEANT Create an infrastructure for e-Science applications Support the advance of technical know-how in the area

4. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 4 Topology Beneficiaries INIMA (Albania) MARNET (FYR of Macedonia) BIHARNET (Bosnia – Herzegovina) AMREJ (Serbia – Montenegro) ISTF (formerly ICTDA, Bulgaria)

5. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 5 Physical Topology Capacities INIMA: 2 Mbps (1xE1) MARNET: 4 Mbps (2xE1) BIHARNET: 2 Mbps (1xE1) AMREJ: 34 Mbps (1xE3) ISTF: 18-34 Mbps (ATM, shaped, 24 Mbps median throughout the project) RoEduNet (backup link): 34 Mbps (ATM, shaped) Terrestrial links only Equipment donation by Cisco (worth €120.000)

6. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 6 Physical Topology (2) Backbone provided by OTEGlobe after tender Based on OTEGlobe’s MultiServices Platform (MSP) MPLS-based 22 POPs world-wide

7. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 7 Physical Topology (3)

8. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 8 Logical Topology 2 VPNs Intra-NREN traffic & traffic towards GEANT Backup to RoEduNet Used only when GRNET links to GEANT fail Any-to-any eBGP sessions between the connected parties Integrate with the MSP to create logical network MSP functions as a “black-box”

9. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 9 Logical Topology (2)

10. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 10 Architecture Carrier supporting Carrier – CsC A way for service providers to allocate VPNs for other service providers Sub-carrier’s customer traffic encapsulated in MPLS labels, thus eliminating management complexity  LSPs extended to CEs Labels exchanged not only within the MSP but also between PEs and CEs (LDP or BGP+labels)

11. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 11 Architecture (2) Carrier supporting Carrier – CsC (cont’d) Routes of the edge service provider or its clients are not propagated to the core network Removes from the clients the burden of configuring, operating and maintaining their backbone’s connection to the core network

12. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 12 Acceptance tests Rude / Crude used (open-source software) Client & server connected on the CEs when possible Benchmarked 50%, 100%, 110% and 120% of each link’s capacity Packet sizes varied in accordance to RFC-2544

13. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 13 Acceptance tests (2) Rude does not take into account (OSI) Layers 2-4 overhead Calculations to generate all correct combinations required Rude performs rounding! Cross-checking generator and collector logs explains minor packet loss near full capacity Strange results (throughput slightly larger than theoretical) also explained by rounding

14. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 14 Acceptance tests (3)

15. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 15 Production stage SEEREN performing very well SLA reports: 100% availability for all links for the last 3 months CsC not hindered by heterogeneity of CEs (7500, GSR, Cat6500 w/ MFC2, others) Collaborative management Stay tuned for Octavian Rusu’s (RoEduNet) presentation!

16. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 16 Conclusion SEEREN extends GEANT to the Balkans Is built on OTEGlobe’s MPLS-based MSP Carrier supporting Carrier used Multihop eBGP integrates with the MSP to create a mesh (logical network)

17. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 17 Credits Technical work carried out by: NREN APMs & colleagues AMREJ: Slavko Gajin, Djordje Vulovic BIHARNET: Edin Silajdzic GRNET: Andreas Polyrakis INIMA: Neki Frasheri, Dashamir Hoxha ISTF: Vedrin Jeliazkov, Hristo Turlakov MARNET: Goran Muratovski RoEduNet: Octavian Rusu, George Bulescu, Cristian Orban OTEGlobe Kostas Anagnopoulos Panagiota Bosdogianni

18. TERENA Networking Conference 2004 - Rhodes, Greece, 7-10 June 2004 18 http://www.seeren.org Thank you for your attention!