1 / 12

Optical networking in CESNET

Optical networking in CESNET. Jan Radil, Stanislav Šíma, Lada Altmanová jan.radil@cesnet.cz. Dark fibres. Dark fibres. Connect every PoP of CESNET2(3) gigabit network, distances up to 300 km Double access to PoPs – restoration, no single point of failure

summer
Télécharger la présentation

Optical networking in CESNET

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Optical networking in CESNET Jan Radil, Stanislav Šíma, Lada Altmanová jan.radil@cesnet.cz

  2. Dark fibres

  3. Dark fibres • Connect every PoP of CESNET2(3) gigabit network, distances up to 300 km • Double access to PoPs – restoration, no single point of failure • Access to CzechLight center in Praha (and other cities in the future) • GE and SDH/SONET

  4. Dark fibres • HW used • Cisco routers and switches • Keopsys optical amplifiers • Nbase-Xyplex convertors (SM-MM, to one fiber, lambdas) • Information about HW & DF in your networks?

  5. CESNET2 topology

  6. CzechLight • Participation in international project StarLight, NetherLight, now CzechLight • „lambda service“ with Cisco ONS 15454 • 2.5 G lambda to Amsterdam • Operational since January 2003 • Access to Amsterdam, Geneva, Chicago • TDM box, high-end router is needed

  7. 10 Gigabit Ethernet • Negotiation of contract for HW • Catalyst 6503 with ER modules (1550 nm) • Optical amplifiers, fiber test-beds prepared • First 10 GE backbone line is operated by PASNET (metropolitan acadamic network) • 1310 LR modules, 1 fibre transmission, passive splitters, length 6 km

  8. 10 Gigabit Ethernet

  9. 10 Gigabit Ethernet

  10. 10 Gigabit Ethernet

  11. 10 Gigabit Ethernet • Similar scenarios as with testing 1 GE (NIL) • Some results (1GE) published on Terena 2002 • More detailed paper on Terena 2003 • Simulating SW – problems with parameters of lasers used in „standart“ equipment (central wavelength, chirp, stability) • DWDM lasers preferred for long-distance transmissions

  12. 10 Gigabit Ethernet • In my opinion, we can go over 40 km • Again, our goal is Nothing-In-Line solution

More Related