An Investigation into Transport Protocols and Data Transport ...

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Appendix C Network Topologies C.1 Dummynet TCP1 sender TCP1 receiver TCP2 sender GigE switch Dummynet Router GigE switch TCP2 receiver Figure C.1: Topology and Experimental set-up of Dummynet network tests. C.2 MB-NG MB-NG part of the Janet Research network run by UKERNA. It is defined by three end points forming a triangle connecting ULCC in London, to 290
C.3. DataTAG 291 Cisco 7606 Cisco 7606 Manchester PCs Cisco 7606 Manchester Cisco 12000 Cisco 12000 Cisco 7606 London UCL PCs 2.5Gb/sec 1Gb/sec (a) MB-NG Testbed Figure C.2: Logical representation of the MB-NG Testbeds. Manchester Computing Centre in Manchester and Rutherford Apple Laboratory in Warrington. For this investigation, is was sufficient to test along only the London to Manchester parts of the MB-NG network. The three end-points are connected via three Cisco 12000 GSR backbone routers. Each site has two Cisco 7600 in which 3 high-end PCs were directed connected onto. A physical bottleneck of 1Gb/sec was provided by a single 1Gb/sec fibre between the two Cisco 7600 co-located at each site. C.3 DataTAG DataTAG is composed of a leased fibre connecting CERN in Switzerland to StarLight in Chicago, United States of America. The infrastructure of the DataTAG testbed consists of two Juniper T320 which aggregate the traffic at either sites onto a dedicated STM64 link across the Atlantic Ocean. The traffic from the testbed PCs are connected through Cisco 7600 series routers which are connected to the Juniper T320’s at either side of the DataTAG network. As the testbed PCs are limited by their 1Gb/sec NICs, the testbed was configured to provide a bottleneck capacity of 1Gb/sec through a virtual
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An Investigation into Transport Pro
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Contents List of Figures . . . . .
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Contents 5 4.6 Summary . . . . . .
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Contents 7 8.2 Test Calibration . .
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Contents 9 10.3.5 Further Tests . .
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List of Figures 11 5.7 Effect on cw
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List of Figures 13 8.16 Unfairness
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List of Figures 15 8.32 Friendlines
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List of Figures 17 9.19 Dynamic swi
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List of Figures 19 D.1 Internet pat
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List of Tables 21 A.1 Hardware and
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Publications And Workshops Some of
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1.2. Research Scope 25 • Identifi
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1.4. Dissertation Outline 27 • Id
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Chapter 2 High Energy Particle Phys
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2.2. Analysis Methods 31 the data i
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2.3. Data Volumes and Regional Cent
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2.3. Data Volumes and Regional Cent
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2.4. Data Transfer Requirements 37
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2.5. Summary 39 data, the most impo
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3.1. Data Intercommunication 41 mov
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3.2. Network Monitoring 43 Whilst l
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3.2. Network Monitoring 45 Internet
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3.2. Network Monitoring 47 1 0.8 Bo
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Chapter 4 Transmission Control Prot
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4.1. Overview 51 Throughput Delay L
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4.2. Protocol Description 53 is dep
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4.2. Protocol Description 55 As a r
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4.3. Congestion Control 57 excessiv
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4.3. Congestion Control 59 probe fo
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4.4. Retransmission Timeout 61 tion
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4.5. TCP Variants 63 mechanisms are
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4.5. TCP Variants 65 connection ini
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4.5. TCP Variants 67 20 15 cwnd sst
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4.5. TCP Variants 69 no more acks t
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4.5. TCP Variants 71 [Hoe96]. In bo
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4.5. TCP Variants 73 TCP Timestamps
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4.6. Summary 75 traffic for a parti
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Chapter 5 TCP For High Performance
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5.1. TCP Hardware Requirements 79 G
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5.1. TCP Hardware Requirements 81 1
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5.1. TCP Hardware Requirements 83 C
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5.2. TCP Tuning & Performance Impro
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5.3. Network Aid in Congestion Dete
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5.3. Network Aid in Congestion Dete
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5.4. Analysis of AIMD Congestion Co
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5.5. Summary 109 5.5 Summary Even t
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6.1. Survey of New-TCP Algorithms 1
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6.2. Discussion and Deployment Cons
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6.3. Summary 133 6.3 Summary The re
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Chapter 7 Testing Framework for the
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7.1. Metrics 137 various New-TCP al
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7.1. Metrics 139 assuming equilibri
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7.2. Environment 141 of packets in
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7.2. Environment 143 T 0 B, T T 1 F
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Chapter 8 Systematic Tests of New-T
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8.1. Methodology 147 fed into the d
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8.1. Methodology 149 Various other
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8.2. Test Calibration 151 Goodput (
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8.2. Test Calibration 153 cwnd and
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8.2. Test Calibration 155 100 1 Agg
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8.2. Test Calibration 157 1000 FAST
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8.3. Results 159 10 100 Total Throu
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8.3. Results 161 14 12 HSTCP 1 α H
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8.3. Results 163 cwnd (packets) 120
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8.3. Results 165 Fraction Bytes Ret
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8.3. Results 167 1200 1000 HTCP 1 H
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8.3. Results 169 This is due to the
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8.3. Results 171 4000 3500 3000 HTC
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8.3. Results 173 800 700 600 Standa
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8.3. Results 175 1 1 Fairness Ratio
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8.3. Results 177 10 100 Total Throu
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8.3. Results 179 1000 Standard TCP
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8.3. Results 181 600 500 Standard T
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8.4. Discussion of Results 183 Asym
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8.4. Discussion of Results 185 New-
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8.4. Discussion of Results 187 Asym
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8.5. Summary 189 The importance of
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9.1. Transfer Tests Across Dedicate
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9.2. Preferential Flow Handling Usi
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9.3. Internet Transfers 229 can cau
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9.3. Internet Transfers 231 Stanfor
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9.3. Internet Transfers 233 10 1 St
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9.3. Internet Transfers 235 1000 90
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9.3. Internet Transfers 237 Fractio
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Page 243 and 244: 9.4. Summary 243 performance of sin
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Page 247 and 248: 10.1. Summary 247 PCs. But at 1Gb/s
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Page 253 and 254: 10.3. Future Directions 253 low ove
Page 255 and 256: 10.3. Future Directions 255 porates
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Page 259 and 260: 10.4. Conclusion 259 This dissertat
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Page 287 and 288: A.2. Network Interface Cards 287 ha
Page 289: B.2. Wide Area Network Tests 289 Da
Page 293 and 294: Appendix D Network Paths of Interne
Page 295 and 296: 295 ham02gva.datatag.org:192.91.239
Page 297 and 298: Bibliography 297 [All03] [AMA + 99]
Page 299 and 300: Bibliography 299 [BPSK96] H. Balakr
Page 301 and 302: Bibliography 301 [DC02] [ea02] [FF9
Page 303 and 304: Bibliography 303 [Flo03] [Flo04] S.
Page 305 and 306: Bibliography 305 [Hoe96] [IET] [Jac
Page 307 and 308: Bibliography 307 [KRB05] [Lah00] [L
Page 309 and 310: Bibliography 309 [MHR03] [MM96] M.
Page 311 and 312: Bibliography 311 [Pos81a] J. Postel
Page 313 and 314: Bibliography 313 [tePM] IEPM Intern
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