Optical networking in CESNET

Jan Radil, Stanislav Šíma, Lada Altmanovájan.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

Access to CzechLight center in Praha (and other cities in the future)

GE and SDH/SONET

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?

CESNET2 topology

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

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

10 Gigabit Ethernet

10 Gigabit Ethernet

10 Gigabit Ethernet

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

10 Gigabit Ethernet

In my opinion, we can go over 40 km Again, our goal is Nothing-In-Line solution