2002 - cesnet

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other 2.5 Gbps line to the Abilene network. For the scheme of the transatlanticconnection, see Figure 3.2.For some European NREN, the GÉANT network also provides access to the Infonetnetwork and commodity Internet, through the Telia and Global Crossingbackbone networks (connection in more GigaPoPs within Europe).NYEE LV LT15534155GR34CY622622UKFRBE155155155NLLUIE155SEDEAbil.PLCZ155622PT622ESNYSKILCHITATHU155RO15534MT622 155622 622HR SIPoP operationalnot GÉANT PoP10 Gbps2.5 GbpsotherFigure 3.1: Infrastructure of GÉANT pan-European networkAll GÉANT GigaPoPs provide multicast service, and MBone connectivity. Thedeployment of QoS (e.g., IP Premium) and other services is in progress. Theconnection to the 6bone is provided through separate backbone network dedicatedto IPv6. The aim is to develop a backbone network supporting both protocolsand providing IPv4 and IPv6 and other services. For details concerningGÉANT network and the related research projects, visit www.geant.net.18 High-speed National Research Network and its New Applications 2002
Canarie622 MbpsESNET622 MbpsGÉANT/GTRN622 Mbps2.5 Gbps2.5 GbpsUKATGÉANTITNrouterAbilene2.5 GbpsDEFigure 3.2: Interconnection of GÉANT and North American research networks3.2 Current Situation concerningCESNET2 and its Development in2002We made a change in the physical topology of our backbone network, fromthe star-type to a ring network. All GigaPoPs are now connected with at leasttwo lines. In addition, the number of leased fibres increased. For the currentsituation concerning the physical topology and a summary of the types of datacircuits, see Figure 3.3.The basic transport protocols are POS/SDH (2.5 Gbps) and a Gigabit Ethernet(1 Gbps). As regards the 2.5 Gbps circuits, we make use of leased SDH circuits(Aliatel, Český Telecom), or leased optical fibres, fitted with the Cisco ONS15104 regenerators. We operate the circuits of the Gigabit Ethernet using leasedfibres. In order to increase the operating distance, we are using two differenttechnologies: EDFA amplifier or intermediate L2 switch (Catalyst 3524), fittedwith GBIC-ZX, with a range of 70 km.The use of an intermediate L2 switch is relatively inexpensive; however, itbrings in trouble concerning the switching to the backup line in case of a circuitfailure (this needs to be solved on layer 3). It is therefore not suitable as acommon solution. It seems promising to use EDFA amplifiers at the line ends(without a need for an active element along the line), the use of which is alsoprotocol transparent (POS/SDH STM-16/OC-48 and GE).Along the Prague–Pardubice and Prague–Ústí nad Labem lines, we have beenverifying the use of Keopsys amplifiers, available for reasonable prices. The useHigh-speed National Research Network and its New Applications 200219
Page 1 and 2: 2002High-speed NationalResearch Net
Page 3 and 4: Table of Contents1 Introduction 92
Page 5 and 6: 6.4.3 Support of Special Events. .
Page 7 and 8: 14.3 Cisco ICM Software . . . . . .
Page 9 and 10: 1 IntroductionThe report presented
Page 11 and 12: 2 Brief SummaryThe research plan ti
Page 13 and 14: men. We designed the basic concept
Page 15 and 16: 2.4 Other ProjectsThe objective of
Page 17: 3 Operation of CESNET2During 2002,
Page 21 and 22: central network core routers with t
Page 23 and 24: The existing logical topology of mu
Page 25 and 26: The logical core topology anticipat
Page 27 and 28: Within the informative part, we req
Page 29 and 30: 3.6 Statistical Traffic Analysis3.6
Page 31 and 32: Figure 3.8: Influence of time step
Page 33 and 34: Praha-Plzeň, 2.5 GbpsPraha-Ústí
Page 35 and 36: CESNET2-GÉANT, 1.2 Gbps (october)C
Page 37 and 38: Part IStrategic Projects
Page 39 and 40: 4 Optical Networks and theirDevelop
Page 41 and 42: US (TeraGrid with backbone 4 × 10
Page 43 and 44: ApplicationMiddlewareHigh bandwidth
Page 45 and 46: 4.2.2 User InterfaceSubscribers (me
Page 47 and 48: ers will move and that other types
Page 49 and 50: GermanyCheb10 G34 MPlzeňGÉANT 622
Page 51 and 52: It is also possible to implement th
Page 53 and 54: Chemical Technology and PASNET, we
Page 55 and 56: Manufacturerwww.accton.comwww.actio
Page 57 and 58: particularly based on the fact that
Page 59 and 60: 0101 NRZlaserMach-ZendermodulatorED
Page 61 and 62: Cisco ONS 15201boosterfiber 130 kmC
Page 63 and 64: 5 IP version 6Further expansion of
Page 65 and 66: 5.2.1 IPv6 Network TopologyFor the
Page 67 and 68: Missing in this list are especially
Page 69 and 70:
5.2.7 Connecting End Site NetworksI
Page 71 and 72:
5.4 IPv6 User Services and Applicat
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sible reprogramming of functions, a
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IPBIpb_0HFEHfe_1SORSor_0LUPLup_0RQR
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As regards our router on the PC pla
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the activities of our project. In 2
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6 Multimedia Transmissions6.1 Objec
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scaling is considerably restricted;
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Figure 6.1: Modified program for sh
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6.3.5 Direct Support for Pilot Grou
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programs which control the integrat
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Figure 6.4: Example of broadcast fr
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Figure 6.5: Set of tuners and serve
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and transfer the solution to an ope
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The actual computing capacity of Me
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7.1.2 Information ServicesMetaCentr
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Figure 7.1: Grid nodes for SC2002an
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(December 2002). This was one of th
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the use of 158 processors). When we
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8 Voice Services in CESNET2The proj
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Figure 8.1: Number of phone calls i
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VoGWs of members involved in the pr
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connection and compare the features
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• Extensive possibilities for the
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H.323 WorldSIP PhoneMS Messengerand
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ation with students at the Strahov
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9 Quality of Service in HighspeedNe
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In addition, Juniper routers make u
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We tried to divide the capacity of
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low with respect to the capacity of
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Figure 9.10: Loss rate on Prague-Po
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sendingapplicationTCP senderseqackp
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Figure 9.13: Example of a course of
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Part IIInternational Projects
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10 GÉANTSince 1996, CESNET has bee
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Figure 10.2: Utilization of individ
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11 DataGridSince 2001, our research
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Therefore, we organized a meeting w
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12 SCAMPISCAMPI (Scaleable Monitori
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12.3.1 WP0 - Requirement AnalysisTh
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1 6 12 18 24 30requirements analysi
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Part IIIOther Projects
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13 Online Education Infrastructurea
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13.1.2 Construction of a Teleinform
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with high-capacity disk memories co
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If the collaboration of individual
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ten, whereas items in the hyperlink
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Besides that, we processed some lec
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CallManager was designed using open
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tre, when we were forced to handle
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15 Intelligent NetFlow AnalyserThe
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In the second half-year, we complet
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15.4 ConclusionDuring 2002, our tea
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• data space consolidation (easy
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ecord size [kB] 256 512 1024 2048 4
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Figure 16.3: Nishan-Linux measureme
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16.3.1 No SecurityThe initiator is
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vices. These features mainly involv
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Figure 17.1: www.cesnet.cz• We ha
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The meeting was broadcast live via
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Most of the problems connected with
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Standard manipulator (privileged us
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19 Security of Local CESNET2Network
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Moreover, the program was complemen
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in the network of AV ČR Praha-Krč
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19.5 Future Plans, Expected Further
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InternetNTPEthernetKPCPPSLabelPPSLa
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generated by the NTP server. Its ou
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21 Platforms for Streaming andVideo
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streaming serverAAA (LDAPS) server1
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21.5 Video Content CollaborationPla
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First of all, we had to define an a
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international-scale broadcast will
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Part IVConclusion and Annexes
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23 ConclusionThe current developmen
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AList of connected institutionsA.1
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institutionconnection [Mbps]Institu
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Karásek Miroslav, Ing., DrSc. Czec
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Voral Pavel, Ing.Voříšek Martin,
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Burčík J.: Optické přepínání
Page 229 and 230:
Veselá S.: Aktivity sdružení CES
Page 231 and 232:
Krsek M.: Platformy pro streaming m
Page 233 and 234:
Zatloukal K., Křivánek V.: Videok
Page 235 and 236:
Satrapa P.: Scavenger: Za Internet
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