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Lee, Seungjun ( 李 昇 俊 ) K orea A dvanced I nstitute of S cience and T echnology August 28, 2003 APAN Measurement WG

“eTOP” E nd- to -end P erformance Measurement Infrastructure on KOREN and APAN links. Lee, Seungjun ( 李 昇 俊 ) K orea A dvanced I nstitute of S cience and T echnology August 28, 2003 APAN Measurement WG meeting sjlee@cosmos.kaist.ac.kr. Outline. Motivation Objectives eTOP System

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Lee, Seungjun ( 李 昇 俊 ) K orea A dvanced I nstitute of S cience and T echnology August 28, 2003 APAN Measurement WG

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  1. “eTOP”End-to-end Performance Measurement Infrastructure on KOREN and APAN links Lee, Seungjun (李 昇 俊) Korea Advanced Institute of Science and Technology August 28, 2003APAN Measurement WG meeting sjlee@cosmos.kaist.ac.kr

  2. Outline • Motivation • Objectives • eTOP System • Deployment on KOREN • Future Works • Remarks • References

  3. Motivation • Measurement is necessary to determine the health and capabilities of the network connection as well as to locate performance problems when they occur. [1] • Computer system administrator or network operator has some measurement capability within their own domain. [1]

  4. Objective • to provide a basis for the understanding and analysis of active measurement data so that one can use this data to better understand their network

  5. eTOP System • Measurement method • System Architecture • Topology • Data Presentations • System environment • Database server • Measurement Machine

  6. 1. Measurement Method Continue.. eTOP System • Active measurement • Metrics and tools • ICMP: ping • Round Trip Time (ms) • Packet Loss (%) • TCP Throughput: iperf [1] • Bandwidth (kbps) • UDP Throughput: iperf • Bandwidth (kbps) • Packet loss (%) • Jitter

  7. 1. Measurement Method Continue.. eTOP System • Send ICMP packet using ping check whether machine is down or not parse RTT/ packet loss • Send probe packet using iperf parse TCP Throughput metrics parse UDP Throughput metrics • Insert parsed measurement data into central database system

  8. 2. System Architecture Continue.. eTOP System • Components • Active Measurement Point (AMP) • Trusted Central Database (DB) • Data Collection Component (DCC) • Data Presentation Component (DPC)

  9. Continue.. eTOP System 2. System Architecture DPC Web Interface Central Database TCP Throughput ICMP RTT UDP Throughput Authentication probe packet AMPs DCC DCC DCC

  10. 3. Topology Continue.. eTOP System AMP AMP 1 AMP n AMP AMP 2 AMP AMP 3 < Domestic > < International >

  11. 4. Data Presentations Continue.. eTOP System • Graph

  12. 4. Data Presentations Continue.. eTOP System • Raw Data Query

  13. 5. System Environment Continue.. eTOP System • Database server • OS: Linux / FreeBSD • MySQL • Hardware: Intel Celeron CPU 1.70GHz  will be upgrade512 MB RAM80GB DISKIntel PRO/100+ PCI Adapter GigE • Measurement machine • Does not need HIGH-QUALITY PC

  14. Deployment on KOREN Seoul (Seoul Nat'l Univ.) Daejeon (KAIST) Gwangju (Chunnam Nat'l Univ.) Busan (NOC) Source http://www.koren21.net

  15. Future Works • Measurement Machines Management Component • Deployment on APAN links Beijing Tokyo Kyushu Hong Kong Taipei Penang Canberra

  16. Remarks • Firewall • Synchronize clocks and cost : GPS ??? • Need YOUR HELP!! • Please visit eTOP website http://etop.apan.net

  17. Related Projects • Active Measurement Project (AMP) http://watt.nlanr.net/ • Surveyor http://www.advanced.org/csg-ippm/ • Internet2 E2Epihttp://e2epi.internet2.edu

  18. 8. References [1] iperf 1.7.0 http://dast.nlanr.net/Projects/Iperf/ [2] pathload and pathrate http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/bw.html [3] bbftphttp://doc.in2p3.fr/bbftp/ [4] Logistical Networkhttp://loci.cs.utk.edu [5] The DataGrid Project, WP7 - Network Services http://ccwp7.in2p3.fr/ [6] Dongchul Son, “Network Usage of G-H/APII by HEP”, The 10th Genkai-Hyeonhae Gigabit Network Workshop/Meeting, May 30, 2003 [7] Warren Matthews and Les Cottrell, “Achieving High Data Throughput in Research Networks”, Stanford Linear Accelerator Center(SLAC), 2001

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