Providing QoS through Active Domain Management

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Presentation transcript:

Providing QoS through Active Domain Management Liang Guo Quality-of-Service Networking Lab CS Department Boston University

System Overview

Case Study: Fairness Issues Motivation: Most TCP flows are short Short flows are vulnerable to packet losses Short flows are less responsible to congestion control Proposal: Giving high priority to short flows Goal: a fair,predictable network

Simulation Setup Web Traffic as background Monitor transmission time of 10 Short + 10 Long flows Traffic Controller Web Servers RIO-PS queue Clients

Simulation Results: Fairness Index

Simulation Results: Transmission Time Short Flows Long Flows New scheme produces less “outliers”

Experiment Setup

Future Works Performance Evaluation of Differentiated Services Fairness-oriented Active Domain Management Real-time Scheduling Traffic Controller Design Other Layer-7 Switching Techniques FOR MORE INFO... Quality-of-Service Networking Laboratory Computer Science Dept., Boston University Copyright 2001

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