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Long distance fiber connections in NREN

Explore the advancements and benefits of Customer Owned Fiber networks in the interconnection of Research and Education Networks (RENs), such as advantages, equipment, and services. Discover the development and deployment of different wavelengths, lambda services, and quality of service enhancements. Delve into the strategic positioning of COF networks in the evolving landscape of network infrastructure.

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Long distance fiber connections in NREN

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  1. Long distance fiber connections in NREN Lada Altmanová, Jan Radil, Stanislav Šíma

  2. Customer Owned Fiber networks • Networks using optical fibres constructed, bought or leased by some network users/customers • Wide independence of Customer Owned Fiber (COF) networks on carriers • Unique window in time for fiber assets or IRU • Getting fiber means controlling the network • Path to deployment of different wavelengths for different networks, lambda services, QoS on backbone, optical switching etc., when it makes sense • COF networks are emerging chronologically from bottom of hierarchy to top

  3. Connections for WAN RENs • Interconnection of REN segments by carier’s lambda services (e.g.: Starlight, CESNET, Pioneer, etc.) • Interconnection of regional area REN’s lambda services (Ca*net4) • Long distance owned or leased fibre, e.g.: • fibre owned or leased by a group of universities, etc. (UCAID, CENIC, SWITCH, CESNET, etc.) • fibre owned or leased by a group of RENs, etc. (CANARIE?, GEANT/DANTE?, Nordunet?, etc.)

  4. RENs using own or leased fibers • Advantages given by Customer Owned Fiber (COF) networks are important for RENs • Developing COF networks: • ORAN, I-wire, CalREN, SWITCH, CESNET, SANET, Pioneer, …. • Prepared COF network: • National LightRail, USA (2003) …. • European fiber connections?

  5. Equipment and servicesfor COF RENs • Significant investments in LH/ULH optronics and ongoing maintenance are required • Fiber leasing or maitenance of own fibers instead of carier services? • Optronics vendors now are becoming aware (at least in USA) of the non-carrier (enterprise, RENs) market for their WAN gear

  6. PoP to PoP fiber lengthsin COF REN • Metropolitan lines < cca 80 km (e.g. COF RENs in Praha or Brno, etc.) • Long hall (LH) lines: cca 80-400 km (e.g. PEI, SWITCH, CESNET, etc.) • Ultra long hall (ULH) lines > cca 400 km (e.g.: US National LightRail?) • Air distances are 50 – 90% of this due to terrain profiles and fibre curves

  7. Type of lines depending on in-line equipment (equipment placed away of PoPs) • Type 0: None (NIL) • Type 1: Dispersion compensators (DCIL) • Type 2: Optical amplifiers (OAIL) • Type 3: Regenerators (RIL) (Possibilities depends on distance, fibre type, basic speed, color count, etc.)

  8. Ostrava – Olomouc (Long distance GE line since January 7, 2002) • 149 km leased fiber, in-line L2 switch used as regenerator • Traffic statistics: http://www.cesnet.cz/provoz/zatizeni/ • Line cards: GE for GSR with GBIC-ZX • Catalyst 3512 XL with GBIC-ZX • GBIC-ZX: Pin: 0 to 4,77dBm, Pout: -23 to 0dBm, powerbudget: 23dB

  9. Praha-Pardubice(Long distance GE line since May 17, 2002) • 189 km leased fibre G.652, attenuation 44.65dB, without in-line equipment • Traffic statistics: http://www.cesnet.cz/provoz/zatizeni/ • Line cards: GE for GSR with GBIC-ZX • Optical amplifier: Keopsys KPS-BT-C-21-Bo-FA 21dBm booster, C-band singlechannel • Opticalattenuator: 5dB (for optical amplifier input)

  10. Keopsys Optical Amplifiers connection

  11. Recomended line end aplication for 1 Gb/s and 2.5 Gb/s lines (NIL) • Booster only - up to 180km • Booster with preamp - up to 220km • Booster with preamp and Raman - up to 270km

  12. Prepared long distance single fiber Fast Ethernet lines (NIL) • Two colors in one fiber, one color for one direction (bi-directional transfer) • Fiber length up to 125 km (G.652) • Price of single fibre leasing: 51-64% of pair price (depends on provider) • Price is comparable with carrier’s 34 Mb/s SDH service (but this use microwave transfer, at least in part)

  13. Single fibre bi-directional Fast Ethernet transfer

  14. StarLight-NetherLight and further • Extension of international experimental lambda switching network to Praha expected from January 2003 (lambda 2.5 Gb/s Amsterdam - Praha), upgrade to 10 Gb/s from July 2003 (lamda or leased fiber) • Further extensions?

  15. CAnet4 Stockholm London MEMS Chi/CA 15454 Border Router 10Gb Oct 2002 Chi/Ams 15454 Ams 15454 Prague 15454 2.5Gb (OC-192) Star Light NY Abilene ? T640 GE OC-48 Groningen (US clusters) 6509 10GE 1670 2.5Gb 2.5Gb 10Gb Jan 2003 Border Router CERN 15454 Alcatel 1670

  16. Long distance 10 GE fibre lines • Expected distance up to 300km on dispersion shifted fiber (G.655), i.e. NIL (Nothing In-Line) • Expected distance up to 300km with in-line chromatic dispersion compensation only on classic fiber (G.652), i.e. DCIL or NNIL (Near Nothing In-Line) type • for G.652 compensation of chromatic dispersion by DCF (Dispersion Compensating Fiber) each 50-60 km • Booster, preamp and Raman optical amplifiers on end points

  17. Prepared testingof 10 GE fibre lines • Field fiber testbed with dispersion shifted fiber (G.655) and classic fiber (G.652) – from December 2002 • Combination of intercity G.655 and first mile G.652 fibers?? • Connection of interface cards an optical amplifiers: results depends on parameters of used optical devices (lasers in Cisco interface cards or other hardware)

  18. Availability of Cisco 10GE cards- long reach (40 km) version • Catalyst 6500 1550nm: yes • OSR 7600 1550nm: yes • GSR 12400 1550nm: to be 2002 • ONS 15454: is prepared • other producer: we are interested to negotiate testing

  19. Long distance fiber line registration service? • We offer registration service for NIL and DCIL lines (for better experience exchange) • over 80 km for 1 Gb/s and 2.5 Gb/s on fiber pair • over 40 km for 10 Gb/s and more on fiber pair • over 20 km for 100 Mb/s and more on single fiber

  20. Acknowledgements • Jan Gruntorad and colleagues from CESNET • Serenate initial workshop speakers

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