CONTENTS

  Title Page

  Copyright Page

  Preface

  1      Introduction to OSI

  1.1     Why OSI?

  1.2     OSI Today

  1.3     The OSI Reference Model
    1.3.1      The Mechanics of the OSI Layered Structure
    1.3.2      Connection-Oriented and Connectionless Services
    1.3.3      Service Primitives

  1.4     More About the OSI Layers
    1.4.1      The Upper Three Layers
    1.4.2      The Transport Layer
    1.4.3      The Network Layer and Subnetworks

  1.5     Conformance and Conformance Testing
    1.5.1      Conformance Tests
    1.5.2      Inter-Vendor Testing

  2      Introduction to VOTS

  2.1     What is VOTS?
    2.1.1      Transport Connections
    2.1.2      Types of Transport Connection

  2.2     The Transport Service
    2.2.1      Transport Service Functions
    2.2.2      Transport Protocol Classes
    2.2.3      Transport Templates

  2.3     Types of Network Service
    2.3.1      CLNS
    2.3.2      CONS

  2.4     The VOTS Programming Interface

  2.5     Managing VOTS

  Glossary

  FIGURES

  1-1        The OSI Model

  1-2        The Layered Structure

  1-3        Service Primitives in Confirmed and Unconfirmed Services

  1-4        Network Connections and Subnetworks

  1-5        ES-IS and IS-IS Protocols

  2-1        Transport Connections Using CLNS

  2-2        Transport Connections Using CONS

  TABLES

  1-1        Functions of the OSI Reference Model Layers

  2-1        Transport Protocol Classes