Presentation on theme: "1 An Overview of the TWAREN Performance Measurement Project Che-nan Yang The National Center for High-performance Computing Aug. 26, 2005 at APAN Taipei."— Presentation transcript:
1 An Overview of the TWAREN Performance Measurement Project Che-nan Yang The National Center for High-performance Computing Aug. 26, 2005 at APAN Taipei 2005
5 TWAREN Network Design Goals Hybrid technology: IP (routing) and optical (dark fiber, DWDM) Dual networks: production (2430km) and research (1721km) networks Hierarchical topology: 3 layers (core, PoPs, end nodes) Providing multiple services Highly reliable, stable and flexible
6 TWAREN Active Measurement Tools Active Measurement Router node RTT and Availability-Test among all router node pairs Daily, Weekly and Monthly report Server node RTT WeathetMap TWAREN AMP(IPv4 and IPv6) - NLANR/MNA Multicast Beacon One-way delay(IPv4 and IPv6) Throughput (IPv4 and IPv6, TCP and UDP) - Ipef
10 Distance vs. RTT Link Speed v.s. Latency Link Speed64 Bytes1500 Bytes 64kbps8ms140.625ms T10.331606ms5.829016ms T30.011445ms0.20118ms FE0.00512ms0.09ms GE0.000512ms0.009ms 10GE0.0000512ms0.0009ms Speed of Light C=3x10 8 m/s The speed of light in the medium V=C/N V = C/1.5 = 2x108m/s DistanceRTT 50KM0.5ms 100KM1ms 200KM2ms 300KM3ms 400KM4ms
11 The Distance of Carrier Fibre CORE CHT wCHT pEBT wEBT p TPHC127.2117.6158.6129.8 TPTN599.9440403.1370.6 HCTC203.6130.6 HCTN516.1354.6256.7261 TCTN313.5228 POPCORECHT wCHT pEBT wEBT p TPNTU6.54637.39 TPNDHU266.3301.6248.4240.5 TPNCU93.712777.278.5 TPAS23.728.846.534.5 TCNCHU10.611.433.550.7 TCNCNU112.6277.6 TNCCU94.9256.796.396.4 TNNCKU27.9319.321.129.8 TNNSYSU110.4238.680.195.8 HCNCTU6.36.616.54 HCNTHU9.6 20.26
13 RTT WeatherMap-2 Why TN to CCU(two-way) shows GREEN? - Standard data compare with the Current data - 1.396 ms vs. 2.314 ms POP TN TNCCUNCKUNSYSU TN 2.325 0.4161.463 CCU 2.314 NCKU0.412 NSYSU1.471 POP TN TNCCUNCKUNSYSU TN 1.403 0.441.5 CCU 1.396 NCKU0.416 NSYSU1.454 Current data Standard data
14 AMP Local Mesh Led by Tony McGregor, NLANR/MNA AMP performs site-to-site active measurements RTT, topology, loss, and on- demand throughput Currently 17(4+11+2) of AMP Client has Operate and service AMP-IPv4 and AMP IPv6 monitoring
24 Goals Make performance data publicly available. Provide TWAREN users with detailed and real-time data of performance measurements. Enable TWAREN users to trace the performance of TWAREN backbone and end-to-end network.
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