DOCSLIB.ORG

Introduction to the New Mainframe: Networking

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Introduction to the New Mainframe: Networking Front cover Introduction to the New Mainframe: Networking Concepts of mainframe-based data communications Methods for implementing TCP/IP and SNA on z/OS Basic skills in network operations, security, and problem determination Christopher Hastings Matt Nuttall Micky Reichenberg ibm.com/redbooks International Technical Support Organization Introduction to the New Mainframe: Networking August 2006 SG24-6772-00 Note: Before using this information and the product it supports, read the information in “Notices” on page 329. First Edition (August 2006) This edition applies to Version 1, Release 7, Modification 0 of z/OS (5694-A01). © Copyright International Business Machines Corporation 2006. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. iii iv Introduction to the New Mainframe: Networking Contents Preface . xiii How this text is organized . xiv How each chapter is organized . xv The team that wrote this redbook. xvi Comments welcome. xvii Part 1. Introduction to networking on the mainframe . 1 Chapter 1. Mainframes and networks . 3 1.1 Mainframes, networks, and you . 4 1.2 Networks and online systems . 5 1.3 Why are networks important? . 7 1.4 Examples of mainframe-based networks . 7 1.4.1 ATM cash withdrawal . 8 1.4.2 Credit purchase at a retail store . 9 1.4.3 Technology choices abound in network technology . 9 1.5 Who supports the network?. 10 1.6 What are the basic elements of a network? . 11 1.7 Overview of mainframe network capabilities . 12 1.7.1 z/OS Communications Server. 15 1.7.2 SNA and TCP/IP on z/OS . 17 1.8 Security in a network . 17 1.8.1 Data protection . 18 1.8.2 Availability . 19 1.9 Summary . 19 Chapter 2. Network layers and protocols review . 21 2.1 Coming to terms . 22 2.1.1 Layers . 22 2.2 Physical media, layer 1 . 23 2.2.1 Network interface card (NIC). 24 2.3 Data link layer, layer 2. 25 2.3.1 Ethernet. 25 2.3.2 Media access control (MAC) addressing . 27 2.4 Network layer, layer 3 . 27 2.4.1 Address Resolution Protocol (ARP) . 29 2.4.2 Network types . 29 2.4.3 Local area network (LAN) . 29 2.4.4 Wide area network (WAN) . 30 © Copyright IBM Corp. 2006. All rights reserved. v 2.4.5 Virtual LAN . 30 2.4.6 Network routing . 31 2.4.7 Building routing tables. 34 2.4.8 Internet Control Message Protocol (ICMP) . 36 2.4.9 Other layer 3 protocols . 37 2.5 Transport layer, layer 4 . 37 2.5.1 Transmission Control Protocol (TCP) . 37 2.5.2 User Datagram Protocol (UDP). 40 2.5.3 Sockets . 40 2.6 Applications . 41 2.7 Security . 41 2.7.1 Firewalls and gateways. 41 2.7.2 Security protocols . 42 2.7.3 Protection . 42 2.8 Systems Network Architecture (SNA) . 42 2.9 Summary . 43 Chapter 3. Hardware connectivity on the mainframe. 45 3.1 Connecting the mainframe . 46 3.2 Channel subsystem (CSS) . 46 3.2.1 Control units . 48 3.2.2 Logical channel subsystem (LCSS) . 48 3.3 The mainframe channel subsystem and network links . 49 3.4 Hardware channels . 51 3.5 Channel command word (CCW) . 52 3.5.1 CCW-based operations. 52 3.5.2 Parallel channel. 52 3.5.3 Enterprise System Connectivity (ESCON) channel . 53 3.5.4 Fiber connection (FICON) . 55 3.5.5 Channel-attached network devices . 55 3.6 Coupling channels. 55 3.7 Open Systems Adapter (OSA) . 56 3.7.1 Queued Direct I/O (QDIO). 58 3.7.2 Non-QDIO mode . 61 3.7.3 OSC mode . 61 3.7.4 Open Systems Adapter for NCP (OSN) . 61 3.8 HiperSockets . 63 3.9 Making the connections. 65 3.10 Summary . 67 Chapter 4. Sample configuration . 69 4.1 Requirements for a mainframe network . 70 4.2 The ZOS Company data center . 70 vi Introduction to the New Mainframe: Networking 4.2.1 Key mainframe network availability aspects . 73 4.3 Summary . 77 Part 2. TCP/IP implementation on the mainframe . 79 Chapter 5. TCP/IP on z/OS. 81 5.1 The heart of the matter . 82 5.1.1 Control issues and the stack . 82 5.1.2 IPv4 versus IPv6 . 83 5.2 The TCP/IP profile. 83 5.2.1 Profile statements . ..
Load more

Recommended publications
  • Operator's Guide for IBM 3270 Information Display Systems
    GA27-2742-1 Operator's Guide for IBM 3270 Information Systems Display Systems i i Second Edition (July, 1972) This is a major revision of GA27-2742-0 and incorporates Technical Newsletter GN31-3001. Operating instructions for the printer and operator identification card reader have been added. Comments and corrections have been incorporated throughout the manual. Any system changes affecting this publication will be reported in subsequent revisions or Technical Newsletters. Additional copies of this manual can be obtained through IBM branch offices. Text for this publication has been prepared with the IBM SE LECTR IC ® Composer. A form is provided at the back of this publication for reader's comments. If the form has been removed, comments may be addressed to: IBM Systems Development Division, Product Publications, Dept. 520, Neighborhood Road, Kingston, N.V., 12401 © Copyright International Business Machines Corporation, 1971, 1972 Contents iii Table of Contents First Words to the Operator Qu ick Reference . 3 Operating the 3270* . 4 Introduction to Display Station Operation 5 Operator Controls 7,8 The Display Image 8 Indicators . 15-19 Keyboards 20 Typewriter Keyboard* ............... 24 I Data Entry Keyboard* ............... 44 I Operator Console Keyboard* . 62 I ·" Printer Operation * . 76 I,.~' , Operator Identification Card Reader . 88 I A Typical Job . · 90 Correcting Operator Errors . 90 Trouble with Your Machine · 92 Operator Trouble Report 92 Extras for the 3270* . .100 Selector Pen . · 101 Secu rity Key Lock .105 Audible Alarm . .106 Numeric Lock Feature .109 Understanding the 3270* .. 110 Data Processing · 111 Display Stations .. · 114 The IBM 3270 Information Display System · 115 ) Index · 119 *The complete table of contents for each section is on the first page of that section.
    [Show full text]
  • Introduction to Mainframe Networking TCP/IP Problem Determination
    z/OS Basic Skills Information Center Networking on z/OS z/OS Basic Skills Information Center Networking on z/OS Note Before using this information and the product it supports, read the information in “Notices” on page 251. This edition applies to z/OS (product number 5694-A01). We appreciate your comments about this publication. Comment on specific errors or omissions, accuracy, organization, subject matter, or completeness of this book. The comments you send should pertain to only the information in this manual or product and the way in which the information is presented. For technical questions and information about products and prices, please contact your IBM branch office, your IBM business partner, or your authorized remarketer. When you send comments to IBM, you grant IBM a nonexclusive right to use or distribute your comments in any way it believes appropriate without incurring any obligation to you. IBM or any other organizations will only use the personal information that you supply to contact you about the issues that you state on this form. Send your comments through this web site: http://publib.boulder.ibm.com/infocenter/zoslnctr/v1r7/index.jsp?topic=/com.ibm.zcontact.doc/webqs.html © Copyright IBM Corporation 2006, 2010. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Before you begin the topic about Coupling channels ...........40 networking on z/OS .........vii Open Systems Adapter (OSA) .......40 HiperSockets ..............46 The I/O cage ..............48 Part 1. Introduction to networking on the mainframe...........1 Chapter 4. Sample network configuration ............49 Chapter 1.
    [Show full text]
  • User's Guide and Reference for IBM Z/OS® Remote Access Programs August 2, 2021
    User's Guide and Reference for IBM z/OS® Remote Access Programs August 2, 2021 International Business Machines Corporation IBM Z Dallas ISV Center Dallas, TX USA This document is intended for the sole use of participants in an IBM Z Dallas ISV Center Remote Development or Early Test Program and is not to be distributed to non-participants or used for purposes other than intended. © Copyright International Business Machines Corporation 2019. All rights reserved. 1 Table of Contents 1 Preface .................................................................................................................................................... 4 1.1 Links ................................................................................................................................................. 4 2 Overview – Remote Access Environment ........................................................................................... 5 2.1 Hardware / Software Platform .......................................................................................................... 5 2.2 Introduction to the Virtual Machine Concept ................................................................................... 5 2.3 z/OS Remote Access Environment ................................................................................................... 5 2.4 Printers .............................................................................................................................................. 7 2.5 System Availability..........................................................................................................................
    [Show full text]
  • 8. IBM Z and Hybrid Cloud
    The Centers for Medicare and Medicaid Services The role of the IBM Z® in Hybrid Cloud Architecture Paul Giangarra – IBM Distinguished Engineer December 2020 © IBM Corporation 2020 The Centers for Medicare and Medicaid Services The Role of IBM Z in Hybrid Cloud Architecture White Paper, December 2020 1. Foreword ............................................................................................................................................... 3 2. Executive Summary .............................................................................................................................. 4 3. Introduction ........................................................................................................................................... 7 4. IBM Z and NIST’s Five Essential Elements of Cloud Computing ..................................................... 10 5. IBM Z as a Cloud Computing Platform: Core Elements .................................................................... 12 5.1. The IBM Z for Cloud starts with Hardware .............................................................................. 13 5.2. Cross IBM Z Foundation Enables Enterprise Cloud Computing .............................................. 14 5.3. Capacity Provisioning and Capacity on Demand for Usage Metering and Chargeback (Infrastructure-as-a-Service) ................................................................................................................... 17 5.4. Multi-Tenancy and Security (Infrastructure-as-a-Service) .......................................................
    [Show full text]
  • Configuring TN3270 C H a P T E R
    CHAPTER 13 Configuring TN3270 IBM 3270 display terminals are among the computing community’s most widely implemented and emulated for host-based computing. Information in this chapter will help you understand the TN3270 terminal emulation environment, and how to use and create files that will allow terminals connected to the communication servers to be used for TN3270 operation. For a complete description of the commands in this chapter, see the Communication Server Command Reference publication. Cisco’s Implementation of TN3270 The TN3270 terminal emulation software is based on software developed at the University of California, Berkeley. This software allows any terminal to be used as an IBM 3270-type terminal. Users with non-3270 terminals can take advantage of the emulation capabilities to perform the functions of an IBM 3270-type terminal. Specifically, Cisco’s implementation supports emulation of an IBM 3278-2 terminal providing an 80 by 24 display. True IBM 3270-type terminals use a character format referred to as extended binary-coded decimal interchange code (EBCDIC). EBCDIC consists of 8-bit coded characters and was originally developed by IBM. Emulation is made possible by termcap and curses functions developed by Berkeley UNIX system developers. These functions translate the keyboard and terminal characteristics for ASCII-type terminals into those expected by an IBM host. ASCII characters are listed in the “ASCII Character Set” appendix in the Communication Server Command Reference publication. Formally, a termcap is a two-part terminal-handling mechanism. It consists of a database and a subroutine library. The database describes the capabilities of each terminal to be supported; the subroutine library allows programs to query the database and to make use of the values it contains.
    [Show full text]
  • Data Stream Programmer's Reference ------,------3270 Information ------ .-- Display System
    ----- - --- 3270 Information ---- - - --- --------- Display System Data Stream Programmer's Reference -------,----- - --- 3270 Information - - - --- -------_.-- Display System Data Stream Programmer's Reference GA23-0059-4 File Number 8360/8370/53/4300/8100-30 Fifth Edition (December 1988) This publication introduces and explains the functions of the 3270 Information Display System data stream. Changes are continually made to the information herein; before using this publication in connection with the operation of IBM systems, refer to the latest IBM System/360 or System 1370 SRL Newsletter for the editions that are applicable and current. It is possible that this material may contain reference to, or information about, IBM products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that IBM intends to announce such IBM products, programming, or services in your country. The names and addresses used in the examples that appear in this manual are fictitious, and any similarity to the names and addresses of actual persons is entirely coincidental. Publications are not stocked at the address given below; requests for IBM publications should be made to your IBM representative or to the IBM branch office serving your locality. A form for readers' comments is provided at the back of this publication. Address additional comments to IBM Corporation, Communication Products Information Development, Department E02, PO Box 12195, Research Triangle Park, North Carolina, U.S.A. 27709. IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation whatever. You may, of course, continue to use the information you supply.
    [Show full text]
  • BALOO's BUGLE Volume 16, Number 10 "Make No Small Plans
    BALOO'S BUGLE Volume 16, Number 10 "Make no small plans. They have no magic to stir men's blood and probably will not themselves be realized." D. Burnham May 2010 Cub Scout Roundtable June 2010 Cub Scout Theme HOOP-DE-DOO Tiger Cub Activities Webelos Traveler and Handyman FOCUS COMMISSIONER’S CORNER Cub Scout Roundtable Leaders’ Guide Jump ball! Free throw! This month, Cub Scouts will have opportunities to play basketball and learn about sportsmanship. Invite a Boy Scout who is a member of his school's basketball team to teach the boys the rules of the game. Hold a pack basketball tournament, making sure to balance out the teams with older and younger boys. It's a The Boys' Life reading Contest is back!!! See information good time to start working on the Basketball belt loop and in Special Opportunities pin. Play other games with hoops. Months with similar themes to CORE VALUES Hoop-Dee-Do Cub Scout Roundtable Leaders’ Guide Dave D. in Illinois Some of the purposes of Cub Scouting developed through September 1939 was the very first month Cub Scouting this month’s theme are: used themes to provide program focus. CD Sportsmanship & Fitness, Cub Scouts will develop Month Year Theme better sportsmanship while playing games with others Name in the den and pack. September 1939 Cub Olympics Personal Achievement, Cub Scouts will feel a sense August 1945 Sports of accomplishment as they demonstrate their new August 1950 Cub Scout Olympics skills on the court. Respectful Relationships, Through interactive August 1953 Sports Carnival games, Cub Scouts' ability to get along and play with August 1956 Cub Scout Field Day others will be strengthened.
    [Show full text]
  • Kindle / Juggling for Beginners: 25+ Tricks to Astound Your Friends
    NK0AJFTA6X ~ Juggling for Beginners: 25+ Tricks to Astound Your Friends ~ PDF Juggling for Beginners: 25+ Tricks to A stound Y our Friends By Cassandra Beckerman Sterling Publishing Co Inc, United States, 2012. Kit. Condition: New. Language: English . Brand New Book. 1 - 2 - 3 balls in the air: now you re juggling! The complete and colorful guide in this cool kit walks you through the essentials--and you won t believe the incredible moves you can learn using the three deluxe balls that are also included. Soon you ll look like an expert at Over the Top, Columns, The Shower, The Claw, and other awesome tricks. Kit includes: - 64-page paperback - 3 juggling balls. READ ONLINE [ 5.47 MB ] Reviews This book is fantastic. This is certainly for all those who statte there had not been a really worth reading. It is extremely diicult to leave it before concluding, once you begin to read the book. -- Prof. Dale Fahey MD This ebook is wonderful. It generally fails to price too much. Your lifestyle period will be transform as soon as you comprehensive reading this ebook. -- Otho Bergstrom V4JTF9GDRC # Juggling for Beginners: 25+ Tricks to Astound Your Friends / Kindle Oth er eBooks Funny Poem Book For Kids - Cat Dog Humor Books Unicorn Humor Just Really Big Jerks Series - 3 in 1 Compilation Of Volume 1 2 3 CreateSpace Independent Publishing Platform. Paperback. Book Condition: New. This item is printed on demand. Paperback. 132 pages. Dimensions: 9.0in. x 6.0in. x 0.3in.LIMITED-TIME SPECIAL: Special Bonus Inside! Thats right. For a limited time you can download a FREE audiobook version..
    [Show full text]
  • Ipswitch Failover V9.5 Administrator's Guide
    Administrator's Guide For Ipswitch Failover v9.5 Copyright ©1991-2016 Ipswitch, Inc. All rights reserved. This document, as well as the software described in it, is furnished under license and may be used or copied only in accordance with the terms of such license. Except as permitted by such license, no part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the express prior written consent of Ipswitch, Inc. The content of this document is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Ipswitch, Inc. While every effort has been made to assure the accuracy of the information contained herein, Ipswitch, Inc. assumes no responsibility for errors or omissions. Ipswitch, Inc., also assumes no liability for damages resulting from the use of the information contained in this document. WS_FTP, the WS_FTP logos, Ipswitch, and the Ipswitch logo, MOVEit and the MOVEit logo, MessageWay and the MessageWay logo are trademarks of Ipswitch, Inc. Other products and their brands or company names, are or may be trademarks or registered trademarks, and are the property of their respective companies. Contents Preface: About This Book.........................................................................vii Part I: Getting Started..................................................................................9 Chapter 1: Ipswitch Failover Concepts.................................................................................11
    [Show full text]
  • Systems Network Architecture Concepts and Pioducts
    ---- -------- ---- Systems --------- - ------- -~- .. - Network Architecture Concepts and Pioducts GC30-3072-1 File No. 370/4300-30 Second Edition (February 1984) This is a reprint of GC30-3072-0 incorporating changes released in Technical Newsletter: GN30-3205 (dated 22 September 1981) Changes are continually made to the information in IBM systems publications. Before using this publication in connection with the operation of IBM systems, refer to the latest IBM System/370 and 4300 Processors Bibliography, GC20-o001, for the editions that are applicable and current. References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Publications are not stocked at the address given below. Requests for copies of IBM publications should be made to your IBM representative or to the IBM branch office serving your locality. A form for readers' comments has been provided at the back of this publication. If the form has been removed address comments to IBM Corporation, Publications Development, Department E02, P.O. Box 12195, Research Triangle Park, North Carolina, U.S.A. 27709. IBM may use or distribute whatever information you supply in any way it believes appropriate without incurring any obligation to you. © Copyright International Business Machines Corporation 1981 Preface This publication introduces the IBM Systems Network Architecture to individuals who need to acquaint themselves with its benefits, its concepts, and the IBM products that are designed for use in SNA networks. This is the basic publication about Systems Network Architecture (SNA) for managers, system designers, and others involved in making decisions about planning or implementing distributed data processing within an organization.
    [Show full text]
  • Setup for Failover Clustering and Microsoft Cluster Service
    Setup for Failover Clustering and Microsoft Cluster Service Update 1 VMware vSphere 6.5 VMware ESXi 6.5 vCenter Server 6.5 Setup for Failover Clustering and Microsoft Cluster Service You can find the most up-to-date technical documentation on the VMware website at: https://docs.vmware.com/ If you have comments about this documentation, submit your feedback to [email protected] VMware, Inc. 3401 Hillview Ave. Palo Alto, CA 94304 www.vmware.com © Copyright 2006-2017 VMware, Inc. All rights reserved. Copyright and trademark information. VMware, Inc. 2 Contents About Setup for Failover Clustering and Microsoft Cluster Service 5 1 Getting Started with MSCS 6 Clustering Configuration Overview 6 Clustering MSCS Virtual Machines on a Single Host 7 Clustering Virtual Machines Across Physical Hosts 7 Clustering Physical Machines with Virtual Machines 9 Hardware and Software Requirements for Clustering 10 Supported Shared Storage Configurations 10 PSP_RR Support for MSCS 11 iSCSI Support for MSCS 11 FCoE Support for MSCS 12 vMotion support for MSCS 12 vSphere MSCS Setup Limitations 13 MSCS and Booting from a SAN 14 Set up CCR and DAG Groups 14 Setting up AlwaysOn Availability Groups with SQL Server 2012 15 2 Cluster Virtual Machines on One Physical Host 16 Create the First Node for Clusters on One Physical Host 16 Create Additional Nodes for Clusters on One Physical Host 17 Add Hard Disks to the First Node for Clusters on One Physical Host 18 Add Hard Disks to Additional Nodes for Clusters on One Physical Host 19 3 Cluster Virtual Machines Across
    [Show full text]
  • A High Availability Clusters Model Combined with Load Balancing and Shared Storage Technologies for Web Servers
    International Journal of Grid Distribution Computing Vol.8, No.1 (2015), pp.109-120 http://dx.doi.org/10.14257/ijgdc.2015.8.1.11 A High Availability Clusters Model Combined with Load Balancing and Shared Storage Technologies for Web Servers A. B. M. Moniruzzaman, Md. Waliullah, Md. Sadekur Rahman Departement of Computer Science and Engineering, Daffodil International University [email protected], [email protected], [email protected] Abstract This paper designs and implements a high availability clusters and incorporated with load balance infrastructure of web servers. The paper described system can provide full facilities to the website hosting provider and large business organizations. This system can provide continuous service though any system components fail uncertainly with the help of Linux Virtual Server (LVS) load-balancing cluster technology and combined with virtualization as well as shared storage technology to achieve the three-tier architecture of Web server clusters. This technology not only improves availability, but also affects the security and performance of the application services being requested. Benefits of the system include node failover overcome; network failover overcome; storage limitation overcome and load distribution. Keywords: Linux Virtual Server (LVS), load-balancing, high availability clusters, Web server clusters, failover 1. Introduction This is a system which can provide full facilities to the website hosting provider and large business organizations High Availability Cluster with Load Balancing” is such a system, which can provide continuous service though any system components fail uncertainly. Without clustering, a server running a particular application as when that particular server crashes, the application will be unavailable until the crashed server is fixed.
    [Show full text]