CONTENTS

  Title Page

  Copyright Page

  Preface

  1      Problem Solving Procedure

  2      Startup Problems

  2.1     VOTS Addresses

  2.2     Configuration Problems

  2.3     License Problems

  3      Documenting Your Network Configuration

  3.1     Configuration for Outbound Connections
    3.1.1      Outbound Connection-Local NAP Type Internet
      3.1.1.1      Local System Information-Outbound Connection, Internet NAP
      3.1.1.2      Remote System Information-Outbound Connection, Internet NAP
      3.1.1.3      Checklist-Outbound Connection, Internet NAP
    3.1.2      Local NAP Type X.25-Outbound Connection
      3.1.2.1      Local System Information-Outbound Connection, X.25 NAP
      3.1.2.2      Remote System Information-Outbound Connection, X.25 NAP
      3.1.2.3      Checklist-Outbound Connection, X.25 NAP
    3.1.3      Local NAP Type Null_Internet-Outbound Connection
      3.1.3.1      Local System Information-Outbound Connection, Null_Internet NAP
      3.1.3.2      Remote System Information-Outbound Connection, Null_Internet NAP
      3.1.3.3      Checklist-Outbound Connection, Null_Internet NAP

  3.2     Configuration for Inbound Connections
    3.2.1      Inbound Connection Using Internet
      3.2.1.1      Local System Information-Inbound Connection Using Internet
      3.2.1.2      Remote System Information-Inbound Connection Using Internet
      3.2.1.3      Checklist-Inbound Connection Using Internet
    3.2.2      Inbound Connection Using X.25
      3.2.2.1      Local System Information-Inbound Connection Using X.25
      3.2.2.2      Remote System Information-Inbound Connection Using X.25
      3.2.2.3      Checklist-Inbound Connection Using X.25
    3.2.3      Inbound Connection Using Null Internet
      3.2.3.1      Local System Information-Inbound Connection Using Null Internet
      3.2.3.2      Remote System Information-Inbound Connection Using Null Internet
      3.2.3.3      Checklist-Inbound Connection Using Null Internet

  4      Problem Solving Cookbook

  4.1     Problems with Outbound Connections
    4.1.1      CR TPDU Not Transmitted
    4.1.2      CR TPDU Transmitted-No Response
    4.1.3      CR TPDU Transmitted-Invalid TPDU Returned
    4.1.4      CR TPDU Transmitted-DR TPDU Returned
      4.1.4.1      CR TPDU Transmitted-ER TPDU Returned
    4.1.5      CR TPDU Transmitted-CC TPDU Returned-DR TPDU Transmitted
    4.1.6      CR TPDU Transmitted-CC TPDU Returned-ER TPDU Transmitted
    4.1.7      Unexpected TPDU Types

  4.2     Problems with Inbound Connections
    4.2.1      CR TPDU Not Received
    4.2.2      CR TPDU Received-No Response from Local System
    4.2.3      CR TPDU Received-DR TPDU Transmitted
    4.2.4      CR TPDU Received-CC TPDU Transmitted-DR TPDU Received
    4.2.5      CR TPDU Received-CC TPDU Transmitted-ER TPDU Received

  4.3     Problems with X.25 Network Connections

  4.4     Problems During Data Transfer
    4.4.1      Unexpected Disconnection
    4.4.2      Data Transfer Is Slow
      4.4.2.1      Local System Withholding Acknowledgments
      4.4.2.2      AKs Are Transmitted for Each DT Received
    4.4.3      Lack of 802.3 Receive Buffers

  4.5     Problems When Using a LAN
    4.5.1      Incorrect Configuration-Problems with NAPs and SNAPs
    4.5.2      Problems with LAN Addresses and LSAPs
      4.5.2.1      LAN Addresses
      4.5.2.2      LSAPs

  4.6     Internet Problems
    4.6.1      No IPDUs Transmitted or Received
    4.6.2      Network Configuration Requirements

  5      Using the Trace Utility with VOTS

  5.1     Introduction to the Trace Utility

  5.2     Using TRACE
    5.2.1      Necessary Privileges
      5.2.1.1      Installing TRACE
      5.2.1.2      Using TRACE
    5.2.2      Performing LIVE Tracing
      5.2.2.1      Starting and Stopping Live Tracing
      5.2.2.2      Analysis Options with Live Tracing
      5.2.2.3      SHOW Commands
    5.2.3      Non-interactive Tracing
      5.2.3.1      Starting and Stopping Non-interactive TRACE
      5.2.3.2      SHOW Commands
      5.2.3.3      Analyzing Collected Data
    5.2.4      Filtering Trace Information

  5.3     TRACE Command Reference Section
    5.3.1      The ANALYZE Command
      5.3.1.1      Qualifiers
    5.3.2      The ATTACH Command
      5.3.2.1      ATTACH Command Qualifiers
    5.3.3      The BACK Command
    5.3.4      The CLEAR Command
    5.3.5      The DEFINE/KEY Command
      5.3.5.1      Qualifiers
    5.3.6      The DELETE/KEY Command
    5.3.7      The EXIT Command
    5.3.8      The HELP Command
    5.3.9      The NEXT Command
    5.3.10     The REFRESH Command
    5.3.11     The SHOW Command
      5.3.11.1     Qualifiers
    5.3.12     The SPAWN Command
      5.3.12.1     SPAWN Command Qualifiers
    5.3.13     The START Command
      5.3.13.1     Qualifiers Used for LIVE Tracing
      5.3.13.2     START Qualifiers Used for Non-interactive Tracing
    5.3.14     The STOP Command

  5.4     Examples of TRACE Output
    5.4.1      TRANSPORT Tracepoint Examples
    5.4.2      INTERNET Tracepoint Examples
    5.4.3      MAC Tracepoint Examples

  5.5     TRACE Messages
    5.5.1      Fatal Messages
    5.5.2      Error Messages
    5.5.3      Warning Messages
    5.5.4      Information and Success Messages

  6      Event Logging

  6.1     Introduction

  6.2     Transport Events
    6.2.1      OSI Reason Codes

  6.3     Internet Events
    6.3.1      Reasons Associated with Internet Events

  6.4     X.25 Events

  A   VOTS Status Codes

  A.1     Status Codes Returned in R0

  A.2     Status Codes Returned in the IOSB

  B   VOTS Error Messages

  B.1     Messages Returned by OSIT$CONTROL When It Tries to Execute a Command

  B.2     Messages Returned by OSIT$CONTROL on Command Input

  B.3     LES$ACP Messages

  C   OSI Reason Codes

  C.1     Codes Returned by Class 1 to 4 Implementations

  C.2     Codes Returned by All Classes

  C.3     Codes Returned by ER TPDUs

  D   DNA Error Codes

  E   Reporting a Problem to Digital

  E.1     Problems and System Failure

  TABLES

  3-1        System Configuration

  5-1        Summary of TRACE Commands

  5-2        DISPLAY Qualifier Options

  5-3        DISPLAY Qualifier Options

  A-1        Status Codes Returned in R0

  A-2        Status Codes Returned in the IOSB