Workshop on scalable QoS, Annapolis

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Presentation transcript:

Workshop on scalable QoS, Annapolis TF-NGN, Southampton April 18th, 2002 Victor Reijs victor.reijs@heanet.ie Scalable QoS report at TF-NGN 1

Why no real QoS services Operational management is difficult Complexity Signaling not present for inter-domain No real market pull Keep it simple principle is missing Scalable QoS report at TF-NGN 2

Scalable QoS report at TF-NGN QoS provisioning Somewhere between 50-100% load Incidents in overprovisioned network routing, outage, DOS attacks At the comparable low speed access side Trough end systems (like TCP) network signals when almost in trouble (ECN) Scalable QoS report at TF-NGN 3

Scalable QoS report at TF-NGN Metric of QoS OWD, ipdv, PLR, Consecutive loss, AB, etc Availability/reliability at short time frame minutes rather than months Reachability Scalable QoS report at TF-NGN 4

Scalable QoS report at TF-NGN Open issues Measure before implementing QoS Make application work on Internet Genuity provides multiple reporting http://www.genuity.com/infrastructure/ New VoIP-codec less depending on PLR like MDC: Multiple Description Coding PRT Performance Response Team Scalable QoS report at TF-NGN 5