Motivation and Goals
Focus of This Talk
QoS Routing Dependencies
Other ?QoS? Routing Models
References
Part I
Cost of QoS Routing
Evaluation Environment
Path Computation/Selection
Cost Components of QoS Routing
Impact of QoS LSAs
Sample Triggering Policies
Class Based Update Triggering
Additional Features
Evaluation Method/Metrics
Evaluation Scenarios
Network Topologies
LSA Volume
Routing Performance
Advertising Quantized Values
Summary of Cost-Performance Trade-off
Observations
Part II
Motivations
Evaluation Methodology
PPT Slide
Overall Structure
Summary of Stand-Alone Costs
Cost of QoS Routing Table
Operational Costs
Average Router Load
A Closer Look At Router Load
Correlation with Routing Performance
LSA Bandwidth
Part III
Motivations and Scope
Accounting for Inaccuracy
What Do We Know About Inaccuracy?
What Distribution?
Assuming We ?Know? The Distribution
Safety Aware Path Computation
Evaluating The Performance Of Safety Aware Routing
Effectiveness of Safety Aware Routing
Revisiting Our Assumption Of Uniform Bandwidth Distribution
Introducing Hold Down Timers
Handling Large Hold-Down Timers
Outline of Possible Randomized Path Selection
Sample Path Selection Probabilities
Performance of Randomized Path Selection
More on Randomization
A ?Favorable? Case
Conclusions
Email: guerin@ee.upenn.edu