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Active Measurement tool for the EuQoS project

Active Measurement tool for the EuQoS project. René Serral-Gracià (Universitat Politècnica de Catalunya). Outline. Introduction NetMeter Working examples Summary and Future Work. Introduction (I). Internet is fast expanding New concerns ... Network performance Increasing needs of

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Active Measurement tool for the EuQoS project

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  1. Active Measurement tool for the EuQoS project René Serral-Gracià (Universitat Politècnica de Catalunya)

  2. Outline • Introduction • NetMeter • Working examples • Summary and Future Work

  3. Introduction (I) • Internet is fast expanding • New concerns • ... • Network performance • Increasing needs of • Bandwidth • More and better services • Videoconference • VoIP

  4. Introduction (II) • Usually new services require • Low latencies • Small Delay variations • Few packet losses • Network administrators need to know • The real network’s performance • If the network is able to provide the desired service

  5. Introduction (III) • Assuring the QoS of the network • Bandwidth • One Way Delay (OWD) • Inter Packet Delay Variation (IPDV) • Packet Losses • Goal • Develop a solid testing methodology • NetMeter

  6. Outline • Introduction • NetMeter • Working examples • Summary and Future Work

  7. NetMeter • Overview • Measurement capabilities • Data analysis and representation

  8. Overview • Basic scenario Traffic Source Network under test Traffic Destination Test flow/s Synchronization Control traffic Control traffic Test Manager

  9. Measurement Capabilities (I) • Controlled data flows • UDP • Periodic • Poisson • Link bandwidth capacity • TCP • Link bandwidth capacity

  10. Measurement Capabilities (II) • Active testing • Controlled traffic • End to End measurements • Passive testing • Multiple capture points • Partial delays

  11. Measurement Capabilities (III) • NetMeter’s characteristics • GPL (http://www.ccaba.upc.edu/netmeter) • Ongoing work • Controlled data flows • Non intrusive

  12. Data analysis/representation • Typical QoS parameters (Numeric) • Maximum • Minimum • Average • Graphical representations • Instantaneous • Distributions • Custom representations

  13. Outline • Introduction • NetMeter • Working examples • Summary and Future Work

  14. Working examples • Inter-Domain QoS Analysis (EuQoS) • Combination of active and passive methods • 802.11 Handover study • QoS preservation during handover

  15. Traffic Destination Traffic Source Capture Access Network 1 Access Network 2 Core IP network 1 2 3 4 “QoS” domain “QoS” domain “QoS” domain Test Manager Inter-Domain QoS Analysis • Typical Inter-Domain scenario (EuQoS)

  16. Inter-Domain QoS Analysis • Site to Site results

  17. Correspondent Node GPS NTP-Server Access Router Home Agent 802.11b 802.11b Test Flow MIPv6 Data Control + NTP Movement Mobile Node Wireless analysis (I) • Handover analysis • Layer 2 • IPv6/Mobile IPv6 • Layer 3 • User’s level perception • Tests • 16 tests • MN  CN • CN  MN • Flows • VoIP - 64Kbps. 34 pps, 252 bytes/pkt • UDP - 1Mbps. 94 pps, 1300 bytes/pkt

  18. Wireless analysis (II) • Handover latency • Wireless LAN (802.11) • New Access Point association • IPv6 • Router Advertisement • Route expiration • DAD • Mobile IPv6 • Home Agent notification

  19. Wireless analysis (III) • Handover behavior

  20. Wireless analysis (IV) • Numerical results CN  MN • Numerical results MN  CN

  21. Outline • Introduction • NetMeter • Working examples • Summary and Future Work

  22. Summary • NetMeter • Active measurement • Passive measurement • NetMeter’s applicability • Inter-Domain QoS Analysis • Wireless LAN/IPv6/Mobile IPv6 • General End to End environment

  23. Future Work • NetMeter • Support for other traffic generation tools • EuQoS • Site to Site tests with QoS • Mobile IPv6 • Test improvements with other protocols • Fast Handovers

  24. Active Measurement tool for the EuQoS project René Serral-Gracià (Universitat Politècnica de Catalunya)

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