RSVP WG -- Seattle IETF / Bob Braden, ISI ............ Page 1

RSVP Working Group
Seattle IETF Meeting
March 29, 1994

RSVP OVERVIEW

Bob Braden
USC Information Sciences Institute

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OUTLINE

? Introduction

? Service Model

? Protocol Mechanisms

? Unsettled Issues

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INTRODUCTION

RSVP: an Internet setup protocol for

resource reservation, to achieve specific

end-to-end quality of service (QoS)

for logical packet streams, or flows.

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Acknowledgments

? MANY PEOPLE HAVE CONTRIBUTED TO RSVP DESIGN . . .

Lixia Zhang, Scott Shenker, Deborah Estrin,

Dave Clark, John Wroclawski, Steve Deering,

Sugih Jamin, Shai Herzog, Bob Braden,

Craig Partridge, Daniel Zappala, and Steve Berson

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RSVP Assumptions

? IP MULTICASTING IS FUNDAMENTAL -- Generalizing 1->1 to 1->n is not effective design paradigm. Instead, make unicast a special case.

? SUPPORT HETEROGENEOUS SENDERS & RECEIVERS
-- Important to handle diversity.

? SCALE TO VERY LARGE # OF RECEIVERS

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RSVP Assumptions (cont?d)

? DECOUPLED FROM ROUTING PROTOCOLS -- Can use existing routing protocols. -- Can use future routing protocols -- e.g, CBT or ESL or ...

? SUPPORT ?CHANNEL SWITCHING? -- idea from Jon Crowcroft: each receiver can independently select, within the network, which subflow it wants to receive.

? TRUTH, JUSTICE, and the INTERNET WAY: -- robustness, modularity, extensibility, ...