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VSI OpenVMS DECnet for OpenVMS Guide to Networking Document Number: DO-DNTGNT-01A Publication Date: August 2020 Revision Update Information: This is a new manual. Operating System and Version: VSI OpenVMS Integrity Version 8.4-2 VSI OpenVMS Alpha Version 8.4-2L1 VMS Software, Inc., (VSI) Bolton, Massachusetts, USA DECnet for OpenVMS Guide to Networking Copyright © 2020 VMS Software, Inc. (VSI), Bolton, Massachusetts, USA Legal Notice Confidential computer software. Valid license from VSI required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the U.S. Government under vendor's standard commercial license. The information contained herein is subject to change without notice. The only warranties for VSI products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. VSI shall not be liable for technical or editorial errors or omissions contained herein. HPE, HPE Integrity, HPE Alpha, and HPE Proliant are trademarks or registered trademarks of Hewlett Packard Enterprise. Intel, Itanium and IA-64 are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. UNIX is a registered trademark of The Open Group. The VSI OpenVMS documentation set is available on DVD. ii DECnet for OpenVMS Guide to Networking Preface ..................................................................................................................................... v 1. About VSI ...................................................................................................................... v 2. Intended Audience .......................................................................................................... v 3. Document Structure ........................................................................................................ v 4. Associated Documents .................................................................................................... v 5. VSI Encourages Your Comments .................................................................................... vi 6. Conventions ................................................................................................................... vi Chapter 1. Overview of DECnet for OpenVMS Networking ............................................ 1 1.1. The DECnet Network ................................................................................................... 1 1.1.1. How a DECnet Network Operates ...................................................................... 1 1.1.2. How DECnet for OpenVMS Serves as the OpenVMS Network Interface .............. 4 1.2. What a DECnet Network Looks Like ............................................................................ 5 1.2.1. How DECnet Systems Communicate .................................................................. 5 1.2.2. The Communications Media DECnet Uses ......................................................... 6 1.2.3. Network Environments Supported by DECnet ..................................................... 6 Chapter 2. What You Can Do over the Network ............................................................. 15 2.1. Network Options for the General User ........................................................................ 15 2.1.1. How to Gain Access to the Network ................................................................. 16 2.1.2. How to Access Remote Files ........................................................................... 16 2.1.3. Network File Operations .................................................................................. 18 2.1.4. Using MAIL and PHONE in a Network Environment ........................................ 23 2.2. Network Options for the Advanced User ..................................................................... 25 2.2.1. Remote Command Procedures .......................................................................... 26 2.2.2. Network Applications Using Task-to-Task Communication ................................ 28 2.3. System and Network Manager Responsibilities ............................................................ 29 Chapter 3. Getting Started on the Network ..................................................................... 31 3.1. Accessing an Existing DECnet for OpenVMS Network Node ....................................... 31 3.1.1. Logging In to a Network Node ........................................................................ 31 3.1.2. Accessing a Remote Node Interactively ............................................................ 33 3.2. Preparing to Bring Up Your System as a Node on an Existing Network ......................... 34 3.2.1. Connecting the Communications Hardware on Your System ............................... 34 3.2.2. Preparing Your System for the Network Environment ........................................ 36 3.2.3. Planning the Configuration of Your DECnet for OpenVMS Node ....................... 37 3.3. Installing DECnet for OpenVMS on Your System ........................................................ 39 3.3.1. Getting a DECnet for OpenVMS License and PAK ........................................... 39 3.3.2. Configuring Your DECnet for OpenVMS Node ................................................. 40 3.3.3. Establishing Asynchronous DECnet Connections to Other Systems ..................... 48 3.3.4. Verifying Successful Connection to the Network ............................................... 58 3.3.5. Shutting Down and Restarting the Network ....................................................... 61 3.3.6. Using NCP to Create and Tailor the Configuration Database .............................. 61 3.3.7. Providing Security for Your DECnet for OpenVMS Node .................................. 63 3.4. Network-wide Considerations ..................................................................................... 67 Chapter 4. Keeping the Network Running ....................................................................... 69 4.1. Monitoring the Network ............................................................................................. 69 4.1.1. Using NCP to Display Information About Network Components ........................ 69 4.1.2. Using NCP Counters ....................................................................................... 71 4.1.3. Using DECnet Event Logging .......................................................................... 71 4.1.4. Other Monitoring Tools ................................................................................... 74 4.2. Testing the Network ................................................................................................... 74 4.2.1. Node-Level Tests ............................................................................................. 75 iii DECnet for OpenVMS Guide to Networking 4.2.2. Circuit-Level Tests .......................................................................................... 76 4.3. Common Problems ..................................................................................................... 77 4.3.1. Common Error Messages and Meanings ........................................................... 77 4.3.2. Problems Related to Network Operation ........................................................... 80 4.3.3. Asynchronous Connection Problems ................................................................. 83 iv Preface This book summarizes information that a user or manager needs to function in a networking environment. It introduces basic DECnet for OpenVMS networking concepts, summarizes user and manager network operations, and describes the procedures. 1. About VSI VMS Software, Inc., (VSI) is an independent software company licensed by Hewlett Packard Enterprise to develop and support the OpenVMS operating system. VSI seeks to continue the legendary development prowess and customer-first priorities that are so closely associated with the OpenVMS operating system and its original author, Digital Equipment Corporation. 2. Intended Audience The guide addresses users who want to know about DECnet on the OpenVMS system: • General users of the DECnet network • Advanced DECnet users and programmers • Managers of networks or individual DECnet systems The guide provides an overview of DECnet networking capabilities that will be helpful to new users of DECnet for OpenVMS and experienced users not accustomed to a networking environment. 3. Document Structure The DECnet for OpenVMS Guide to Networking provides the following information in four chapters: • Chapter 1: Provides an introduction to networking and a summary of how the DECnet network operates. Diagrams showing examples of DECnet configurations are included. • Chapter 2: Describes the functions that OpenVMS users can perform over the network. File- handling commands and programming examples are included, along with a summary of system management tasks. • Chapter 3: Gives the basic instructions for logging on to an existing network. Explains how a system manager brings a system up as a node on an existing network. A complete procedure for installing DECnet for OpenVMS on the system is included. • Chapter 4: Offers suggestions for effectively running the network, including monitoring tools, test procedures,
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