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Lee, Seungjun ( ) Korea Advanced Institute of Science and Technology August 28, 2003 APAN Measurement WG meeting sjlee@cosmos.kaist.ac.kr eTOP End-to-end Performance Measurement Infrastructure on KOREN and APAN links Slide 2 2 Outline Motivation Objectives eTOP System Deployment on KOREN Future Works Remarks References Slide 3 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] Slide 4 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 Slide 5 5 eTOP System 1.Measurement method 2.System Architecture 3.Topology 4.Data Presentations 5.System environment Database server Measurement Machine Slide 6 6 1. Measurement Method Active measurement Metrics and tools 1.ICMP: ping Round Trip Time (ms) Packet Loss (%) 2.TCP Throughput: iperf [1] Bandwidth (kbps) 3.UDP Throughput: iperf Bandwidth (kbps) Packet loss (%) Jitter Continue.. eTOP System Slide 7 7 1. Measurement Method 1.Send ICMP packet using ping check whether machine is down or not parse RTT/ packet loss 2.Send probe packet using iperf parse TCP Throughput metrics parse UDP Throughput metrics 3.Insert parsed measurement data into central database system Continue.. eTOP System Slide 8 8 2. System Architecture 1.Components Active Measurement Point (AMP) Trusted Central Database (DB) Data Collection Component (DCC) Data Presentation Component (DPC) Continue.. eTOP System Slide 9 9 Central Database AMPs ICMP RTT TCP Throughput Web Interface UDP Throughput Continue.. eTOP System probe packet DPC DCC Authentication 2. System Architecture Slide 10 10 3. Topology AMP 2 AMP 1 AMP n AMP 3 Continue.. eTOP System AMP AMP Slide 11 11 4. Data Presentations 1.Graph Continue.. eTOP System Slide 12 12 4. Data Presentations 2.Raw Data Query Continue.. eTOP System Slide 13 13 5. System Environment Database server OS: Linux / FreeBSD MySQL Hardware: Intel Celeron CPU 1.70GHz will be upgrade 512 MB RAM 80GB DISK Intel PRO/100+ PCI Adapter GigE Measurement machine Does not need HIGH-QUALITY PC Continue.. eTOP System Slide 14 14 Deployment on KOREN Gwangju (Chunnam Nat'l Univ.) Busan (NOC) Daejeon (KAIST) Seoul (Seoul Nat'l Univ.) Source http://www.koren21.net Slide 15 15 1.Measurement Machines Management Component 2.Deployment on APAN links Kyushu Tokyo Future Works Beijing Taipei Penang Hong Kong Canberra Slide 16 16 Remarks Firewall Synchronize clocks and cost : GPS ??? Need YOUR HELP!! Please visit eTOP website http://etop.apan.nethttp://etop.apan.net Slide 17 17 Related Projects Active Measurement Project (AMP) http://watt.nlanr.net/ http://watt.nlanr.net/ Surveyor http://www.advanced.org/csg-ippm/ http://www.advanced.org/csg-ippm/ Internet2 E2Epi http://e2epi.internet2.edu http://e2epi.internet2.edu Slide 18 18 8. References [1] iperf 1.7.0 http://dast.nlanr.net/Projects/Iperf/http://dast.nlanr.net/Projects/Iperf/ [2] pathload and pathrate http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/bw.html http://www.cc.gatech.edu/fac/Constantinos.Dovrolis/bw.html [3] bbftp http://doc.in2p3.fr/bbftp/ http://doc.in2p3.fr/bbftp/ [4] Logistical Network http://loci.cs.utk.edu http://loci.cs.utk.edu [5] The DataGrid Project, WP7 - Network Services http://ccwp7.in2p3.fr/ 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