Quality of Service in the Internet: Fact, Fiction, or Compromise?

2/16/98


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Table of Contents

Quality of Service in the Internet: Fact, Fiction, or Compromise?

Quality of Service Definitions Approaches Mechanisms Considerations Summary

What is the problem?

Rationale

Non-Rationale

What is the expectation?

Expectation setting

Expectation setting

Expectation setting

Expectation setting

What is Quality?

Quality metrics

Quality metrics

Service Quality

Quality of Service Definitions Approaches Mechanisms Considerations Summary

Integrated Services

IntServ and the Internet

Differentiated Services

DiffServ and the Internet

Quality of Service Definitions Approaches Mechanisms Considerations Summary

QoS Service Element

QoS Service Element (cont)

Virtual Circuits

QoS Paths

QoS per packet indicators

Quality of Service Definitions Approaches Mechanisms Considerations Summary

End-to-End QoS

Pervasive homogeneity - Not!

State and Scale

Network Layer Tools

QoS Implementation Considerations

Yet to be Resolved

Unanswered Questions

Quality of Service Definitions Approaches Mechanisms Considerations Summary

Summary

References

Questions? Thank you.

Authors: Geoff Huston, Paul Ferguson

Email: gih@telstra.net, ferguson@cisco.com

Home Pages: http://www.telstra.net/gih http://www.employees.org/~ferguson

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