research department workshop on cef-networks development of cef networks design stanislav sima lada...

Research Department Workshop on CEF-Networks www.ces.net

Development of CEF networks design

Stanislav SimaLada Altmannova

Prague May 17th, 2005



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Research Department CEF Networks workshop www.ces.net

Previous presentations available on-line I.Development of the CESNET2 optical network. TERENA

Networking Conference, Limerick, June 4, 2002.(Nothing-In-Line approach + 189 km NIL operation announced)http://www.terena.nl/conferences/tnc2002/Slides/sl3c2.ppt

Long distance fiber connections in NREN, TF-NGN Budapest, October 18, 2002.

(10 Gb/s NIL possible up to about 300 km, single fibre bi-directional transmission in production network up to 125 km)

http://www.terena.nl/tech/task-forces/tf-ngn/presentations/tf-ngn9/sima.ppt

Fibres and advanced optical devices for a new networking strategy. TERENA TF-NGN Cambridge, September 16th, 2003.

(Fibre is strategic asset. CEF networks concept. Free space optics for cost-effective first mile. Connect Near over Border by fibre.)

http://www.terena.nl/tech/task-forces/tf-ngn/presentations/tf-ngn12/20030915_SS_Optical.pdf



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Previous presentations available on-line II.

Procurement and lighting of dark fibre. CEF Networks workshop, Prague May 2004.

(Double payment of fibre infrastructure? NIL results. CESNET-made optical amplifiers deployment announced.)

http://www.ces.net/doc/seminars/20040525/pr/CEF%20Networks3ext.ppt

Towards a Nation-wide Fibre Footprint in research and education networking. TERENA Networking Conference, Rhodes, June 9, 2004.

(Dark fibres brings progress to REN design and subsequently to WAN design generaly. From naive economy to strategy. National fibre footprint in European NRENs. GLIF and CzechLight.)

http://www.terena.nl/conferences/tnc2004/programme/presentations/show.php?pres_id=97



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Network design Specifications of three items are needed:

– Network services, – building elements, – implementation (deployment, setup, …)

Top-down design process starts with network services specification, botom-up design process starts with building elements specification

Neither of above two start points is „the best“ !!! Results of one way design are suboptimal (i.e. bad),

returns and corrections of decisions in design process are needed !!!

Experience and theoretical knowledge of circuits design and computer design help to deeply understand above problem



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Legacy in network design Buiding elements, implementation and operation of large

scale networks are procured Procurement is long process (especially if public funding

is used): e.g. 7-24 month Returns and corrections of decisions are very difficult or

impossible in procurement process Vendors have limited possibilities to tailor services and

equipment to user needs, so they offer „universal solution“ (=suboptimal for given case)

Exceptions:– legal system in some countries is not so restrictive to research– lower scale networks (e.g. Metropolitan) make implementation

and operation by own staff



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Development of network design Legacy design proces often gives suboptimal network services

(costs, rate, flexibility…): mainly transmission layer is poorly designed from technical and economical point of view (is the most hidden to user)

In general, improvement possibilities were proved: – procurement of dark fibres instead services– procurement of multivendor equipment plus integration

Necessity of bad reliability and interoperability was not proved Multidomain operation is needed generaly and includes

multivendor interoperability and multidomain monitoring and control

Disadvantage: design and operation are more complicated Solution: procure support of design, implementation and

operation, and save own ability to quick return and correct design (including retendering etc.)



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New situation in network design Main source of innovation is optical technology now Fibres are the most important buiding element now Change of P2P services by P2P fibres was first step only New transmitters, receivers, amplifiers, gratings etc. are

available, some of they even with MultiSource Agreements

CEF Networking enables high availability and cost-efectivness of new services (e.g. Facilities based networking, E2E lightpath on demand, fibre switching…)

CEF approach starts in WAN or MAN in companies, corporates, military, municipalities and hospitals (etc.): new market segment is emerging, tasks of vendors are changing



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CESNET2 fibre procurement Re-tendering since 2001 to 2005, goals:

– decreasing costs, including single fibre lines– shorter lines including first mile– NIL approach– two or more fibre pairs to network node– reliability increase by physical diversity of first

miles to node– single provider of dark fibre line (spans could

have different owners)– first mile for international lines in Prague– first mile for fibre connection of user premises– cross border fibres (single provider)



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DF Lines 3 500 km of fibre pair operational in CESNET2

350km of single fibre within CESNET2

660 km of fibre pair in CzechLight testbed

More than 760 km of special fibres on the spools in laboratory



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Example of lambdas and fibres costs(fibres are blue, road distances of cities are from 20 to 210 km)

Interciti Line

Rate 2001 (Euro/y/m)




1 2,5G 0,83 2,5G 0,83 2,5G 0,68 1GE 0,332 34M 0,78 1GE 0,43 1GE 0,433 34M 0,84 34M 0,84 0,534 2,5G 0,61 2,5G 0,22 2,5G 0,225 2,5G 0,536 2,5G 1,21 2,5G 1,21 1GE 0,417 1GE 0,70 1GE 0,178 1GE 0,63 1GE 0,639 1GE 0,40 1GE 0,40 1GE 0,4010 2,5G 0,31 2,5G 0,3111 1GE 0,2412 2,5G 0,63 2,5G 0,63 2,5G 0,63 2,5G 0,1113 2,5G 1,64 2,5G 0,89 2,5G 0,8914 2,5G 3,8315 2,5G 2,53 2,5G 0,95 2,5G 0,95 2,5G 0,9116 2,5G 1,5517 2,5G ? 1,05 1GE 1,05 1GE 0,50 1GE 0,5018 2,5G 2,67 2,5G 0,99 2,5G 0,42 2,5G 0,4219 34M 0,98 34M 0,98 1GE 0,5020 1GE 0,29 1GE 0,29



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Cross border fibre (CBF, NoB) Viena-Bratislava-Brno-Ostrava-BialskoBiala Austria-Slovakia-Czech Rep-Poland Our presentation of experience with CBF on TF-NGN

Cambridge, September 2003 (we call it NoB, Near over Border)

SERENATE study in 2003 – we request analysis Having NoB fibre connection, you could implement

some lambdas for GEANT2 (or for Abilene in US.) Cost rule for fibres is KIS (keep it short). GN2 tender allowing fibres continues (we will use

examples, not results) NoB is supported by SEEFIRE study



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2 years after: Analysis still needed SERENATE study, p.24, published April 22., 2003

http://www.serenate.org/publications/d9-serenate.pdf „Prices of equipment are relatively important for the economics of

transmission systems, but the overall costs heavily depend on the network architecture and topology. The basic approach is to connect geographically neighbouring universities by fibres. NRENs should carefully analyse the pros and cons of any solution going beyond this, i.e. using an overlay fibre structure, because such a solution is usually more expensive. It would be feasible and cheap, albeit not simple, to independently cross national borders to build regional fibre networks.“

„This situation requires a new and careful analysis of the architecture and topology of the transmission layer (typically a transmission structure overlaying the NREN’s topology) at the European level.“



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Overlaying fibre lines: when are needed??(lines are examples only)



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Facility based networking: GLIF and CzechLight

Global Lambda Integrated Facility (GLIF)• Environment for co-operation:

networking, infrastructure, network engineering, system integration, middleware, applications

• GLIF was established by invited participants at the 3rd Global Lambda Grid Workshop, held August 27, 2003 in Reykjavik, Island, www.glif.is

• Dark fibres are often used for Gigabit or 10 Gigabit access to cities and university premises



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Facility and production networking

• Facilility and production networking should be complementary

• Prague-Amsterdam 10 Gb/s lambda since September 1, 2004 (Cisco-Lucent-Nortel)

• We are studying/testing possibilities of lambda connection to FermiLab, RAL, Karlsruhe, Taipei etc.

We will use E2E lambdas prepared by GEANT2+NREN+MAN, if (when) available for such connections



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GLIF – World Map December 2004



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CzechLight connections(to GLIF, to GN2 testbed and to cz premises)



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CzechLight intercity connections Prague – Amsterdam lambda (GLIF facility), first

mile in Prague on dark fibre, OC-192c transmission, grey 1550nm

Prague – Brno, dark fibre, 298.3 km, 66,5 dB, including 257.3 km of G.655 fibre, DWDM OC-192c transmission, NIL test

Prague – Plzen, dark fibre, 159.4 km, 36.7 dB, GE transmission by CzechLight EDFA 2in1



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CzechLight connections in Prague region

Connections of Particle physics workplaces- Institute of Physics of the Academy of Sciences of the Czech republic, dark fibre, GE transmission- Faculty of Mathematics and Physics of Charles University, dark fibre, GE transmission - Nuclear Physics Institute of the Academy of Sciences of the Czech Republic in Řež, dark fibre, GE transmission- Faculty of Nuclear and Physical Engineering of Czech Technical University, lambda on PASNET dark fibres by CWDM, GE transmission

We prepare connections for medical research



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City dark fibre lines to the of CzechLight node in Prague

Point kmAttenuation 1550nm (dB)

max

Attenuation 1310nm (dB)

maxInstalling

Nuclear Physics Institute 25,3 5,9 9,64 1.9.2004

Institute of Physics Academy of Sciences of CR

25,6 8,7 12,9 8.11.2004Faculty of

Mathematics and Physics 8,9 3,18 4,61 15.10.2004



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CzechLight configuration

Core node in Prague

Cisco 15454 with 10 G DWDM SONET, 4xGE

Cisco C3550 – 12G

Cisco C6503 with 10 GE and GE Core node in Brno

Cisco 15454 with 10 G DWDM SONET, 4xGE Cisco 6506 with 10 GE and GE prepared



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Acknowledgement

Jan Gruntorad for support Miroslav Karasek, Jan Radil and Josef

Vojtech for advanced lighting of CESNET2 and CzechLight fibres

Comment: presented ideas and opinions are result of our ongoing R&D activities and are opened to improvement

research department workshop on cef-networks development of cef networks design stanislav sima lada...

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