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QoS monitoring activities

QoS monitoring activities. TF-STREAM November 127 th , 2000 Victor Reijs victor.reijs@heanet.ie. Outline. Megaconference II QoS testing… Application behavior on impaired networks... TERENA/DANTE activities. Megaconference II QoS testing. Frustration how to predict the QoS of applications

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QoS monitoring activities

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  1. QoS monitoring activities TF-STREAM November 127th, 2000 Victor Reijs victor.reijs@heanet.ie QoS monitoring activities

  2. Outline • Megaconference II QoS testing… • Application behavior on impaired networks... • TERENA/DANTE activities... QoS monitoring activities

  3. Megaconference II QoS testing • Frustration how to predict the QoS of applications • NLM <=> HEAnet MPEG-2 tests • Participants... • Usual tools… • Application-layer network testing... QoS monitoring activities

  4. Participants • NetIQ Cooperation • VidiNet • OARnet and ACCORD • Internet2 • SURFnet and University of Utrecht • HEAnet QoS monitoring activities

  5. Usual tools • ping, traceroute, PingPlotter, Iperf, CV2SIM, NetTach, etc. end-to-end testing, not edge to edge testing • RIPE TTM (and Surveyor/Tombstone) edge-to-edge testing, but scarce resource QoS monitoring activities

  6. Application-layer network testing • Chariot, Qcheck and Endpoints • Endpoints in the path (such as peering points) • Scripts to simulate traffic between any two Endpoints • Central system to gather information QoS monitoring activities

  7. General QoS grid topology QoS monitoring activities

  8. Small QoS grid setup QoS monitoring activities

  9. Test results • Script for H.323 video stream: 320 kbit/s • Throughput • Delay • Delay variation • Packet sequence errors • Lost data... QoS monitoring activities

  10. Lost data QoS monitoring activities

  11. Some conclusions • A new tool, so experience needs to be gained • Has potential: end2end and edge2edge • Has security build in • Still proprietary • Application behavior on impaired networks... QoS monitoring activities

  12. Application behavior on impaired networks • Simulate impaired network eg: loss, jitter, delay variation, available bandwidth • Server and client on this impairment box • Determine perceived application quality • ftp, H.323/VoIP, MPEG-2, streaming, computational grid • Multi dimensional space QoS monitoring activities

  13. European activities • Task Force - Next Generation Networking • QoS/SLS monitoring • Application behavior on impaired networks • Possible cooperation: TEQUILA, e2e Performance • PERTs QoS monitoring activities

  14. Questions??? www.heanet.ie/heanet/ projects/nat_infrastruct/cosmega.html victor.reijs@heanet.ie QoS monitoring activities

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