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Jan Gruntorád Managing Director CESNET Czech Republic

Customer Empowered Fibre Networks - CESNET Experience. Jan Gruntorád Managing Director CESNET Czech Republic jg@cesnet.cz. Copenhagen, October 23-24,2003. Presentation overwiev 1. Fibres in CESNET

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Jan Gruntorád Managing Director CESNET Czech Republic

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  1. Customer Empowered Fibre Networks - CESNET Experience Jan Gruntorád Managing Director CESNET Czech Republic jg@cesnet.cz Copenhagen, October 23-24,2003

  2. Presentation overwiev 1. Fibres in CESNET 2. Comparison of national 2.5 Gbps and 10 Gbps lambda vs. dark fibre solution 3. Comparison of 10 Gbps international lambda vs dark fibre solution 4. Conclusions

  3. Customer Empowered Fibre(CEF) networks – general view • CEF networks are emerging technology, that gradually changes network architecture, topology and services from bottom of hierarchy to top • Very important advantage is independence on carriers • Getting fibre means controlling the network • Cost effective in comparison to clasical approach

  4. Fibresin CESNET - strategic results • CESNET started leasing fibres since 1999 • National fibre footprint realized or contracted (for 1 – 5 year) • 17 lines, overall lenght 2 513 km • 2 fibre providers offer on-demand fibre cable laying for first mile (delivery before 6 month, price about 30 000 Euro/km for 12 strand cable) • 1 fibre provider offers also single fibre leasing (price is 60% of fibre pair leasing) • For traffic statistics (actual and past) please see:http://www.cesnet.cz/provoz/zatizeni/

  5. Fibresin CESNET - update • Tender for new lines and shorter fiber lines between PoPs (delivery before 31.12.2003): • 19 lines, overall lenght 2 650 km • 8 participants in last fibre leasing tender (5 fibre providers + 3 carriers) • If tender do not allow lambdas, carriers offer fibre leasing (some of them in first time in their history!) • Results allow to change from longer fibre to shorter (e.g. by 35%) and to eliminate expensive lambdas in CESNET2 network

  6. Buying lambdas is mostly too expensive • Preferred method should be leasing or buying/laying fibre • Reasonable exceptions are impossibility of fibre acquisition (in short time) or price advantage of buying lambdas (rarely for distances under about 500 km) • Prices should be compared also for future upgrade of the transmission rate • Price comparison example follows:

  7. 2.5 Gbps case study in Central Europe: buying lambdas vs. implementation

  8. 10 Gbps case study in Central Europe:buying lambdas vs. implementation

  9. Comments to case study • CEF network advantages are increasing for higher transmission rate and for more lambdas • Multivendor equipment brings economical advantages (buy best equipement in each category if interoperability is verified) • Cisco and Keopsys equipment available in April 2003 is used • 4 year depreciation of equipment is calculated, taxes and academic discounts included, equipment service fees included • Calculated expences of lambda leasing and fibre leasing (0.4 - 0.5 Euro/m/year) are based on offers for year 2003 • Raman amplifiers instead of in-line EDFA should be used, if NIL is preferred

  10. Comments to line Brno - Ostrava • The longest known line NIL operational (235 km) • Two other configurations where tested: • For GE transmission is not preamplifier necessary (only booster) • For 2,5G POS transmission with booster and preamplifier is possible

  11. Brno – Ostrava (Long distance GE line since June 1, 2003) • 235 km leased fibre pair G.652, attenuation • 50,55dB, without in-line equipment • Line cards: GE for GSR with CWDM GBIC • Optical amplifier: Keopsys KPS-BT2-C-27- • Bo-FA27dBm booster, C-band singlechannel • Optical preamplifier:Keopsys KPS-BT2-C- • 10-LN-SA (for upgrade to 2.5 G POS)

  12. Conclusions - Due to latest development in the USA (NLR) Europe should be more active in implementation CEF network especialy in GN2 project - More intensive information exchange between NRENs about optical technologies - CESNET is ready to host workshop e.g. in March 2004 in Prague

  13. For more information see: [1] Jan Gruntorád: How CESNET Got Access to Dark Fibres, SERENATE NREN Workshop, February 4-5, 2003 -www.serenate .org [2] Jan Radil, Leoš Boháč, Miroslav Karásek: Optically Amplified Multigigabit Links in CESNET2 Network, TERENA Networking Conference, Zagreb, Croatia, May 19-22, 2003 -www.terena.nl

  14. Acknowledgement to Lada Altmanová, Jan Radil and Stanislav Šíma who agreed to provide presentation Fibres and Advanced Optical Devices for a New Networking Strategy, TF-NGN Cambridge, September 16, 2003 - www.terena.nl as input to this talk

  15. Thank you for your attention

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