Book description
For more than 40 years, IBM® mainframes have supported an extraordinary portion of the world’s computing work, providing centralized corporate databases and mission-critical enterprise-wide applications. The IBM System z®, the latest generation of the IBM distinguished family of mainframe systems, has come a long way from its IBM System/360 heritage. Likewise, its IBM z/OS® operating system is far superior to its predecessors in providing, among many other capabilities, world class and state-of-the-art support for the TCP/IP Internet protocol suite.
TCP/IP is a large and evolving collection of communication protocols managed by the Internet Engineering Task Force (IETF), an open, volunteer organization. Because of its openness, the TCP/IP protocol suite has become the foundation for the set of technologies that form the basis of the Internet. The convergence of IBM mainframe capabilities with Internet technology, connectivity, and standards (particularly TCP/IP) is dramatically changing the face of information technology and driving requirements for even more secure, scalable, and highly available mainframe TCP/IP implementations.
The z/OS Communications Server TCP/IP Implementation series provides understandable, step-by-step guidance about how to enable the most commonly used and important functions of z/OS Communications Server TCP/IP.
In this IBM Redbooks® publication, we provide an introduction to z/OS Communications Server TCP/IP. We then discuss the system resolver, showing the implementation of global and local settings for single and multi-stack environments. We present implementation scenarios for TCP/IP Base functions, Connectivity, Routing, Virtual MAC support, and sysplex subplexing.
Table of contents
- Front cover
- Notices
- Preface
- Chapter 1. Introduction to Communications Server for z/OS IP
-
Chapter 2. The resolver
- 2.1 Basic concepts of the resolver
-
2.2 The resolver address space
- 2.2.1 The resolver SETUP data set
- 2.2.2 The resolver configuration file
- 2.2.3 Local hosts file
- 2.2.4 Resolver DNS cache
- 2.2.5 Criteria for indicating an unresponsive DNS name server
- 2.2.6 Unresponsive DNS name servers
- 2.2.7 Affinity servers and generic servers
- 2.2.8 Resolving an IPv6 address
- 2.2.9 Resolver support for EDNS0
- 2.2.10 Considerations
- 2.3 Implementing the resolver
- 2.4 Problem determination
- 2.5 Additional information
-
Chapter 3. Base functions
- 3.1 The base functions
- 3.2 Common design scenarios for base functions
- 3.3 z/OS UNIX System Services setup for TCP/IP
- 3.4 Configuring z/OS TCP/IP
- 3.5 Implementing the TCP/IP stack
- 3.6 Activating the TCP/IP stack
- 3.7 Reconfiguring the system with z/OS commands
- 3.8 Job log versus syslog as diagnosis tool
- 3.9 Message types: Where to find them
- 3.10 Additional information
-
Chapter 4. Connectivity
- 4.1 What is connectivity
- 4.2 Recommended interfaces
- 4.3 Connectivity for the z/OS environment
- 4.4 OSA-Express QDIO connectivity
-
4.5 OSA-Express QDIO connectivity with Connection Isolation
- 4.5.1 Description of Connection Isolation
- 4.5.2 Dependencies for Connection Isolation
- 4.5.3 Considerations for Connection Isolation
- 4.5.4 Configuring OSA-Express with Connection Isolation
- 4.5.5 Verifying Connection Isolation on OSA2080X
- 4.5.6 Conclusions and recommendations: best practices for isolating traffic
- 4.6 HiperSockets connectivity
- 4.7 Dynamic XCF connectivity
- 4.8 Controlling and activating devices
- 4.9 Problem determination
- 4.10 Additional information
- Chapter 5. Routing
- Chapter 6. VLAN and Virtual MAC support
- Chapter 7. Sysplex subplexing
-
Chapter 8. Diagnosis
- 8.1 Debugging a problem in a z/OS TCP/IP environment
- 8.2 Logs to diagnose CS for z/OS IP problems
- 8.3 Useful commands to diagnose CS for z/OS IP problems
-
8.4 Gathering traces in CS for z/OS IP
- 8.4.1 Taking a component trace
- 8.4.2 Event trace for TCP/IP stacks (SYSTCPIP)
- 8.4.3 Packet trace (SYSTCPDA)
- 8.4.4 OMPROUTE trace (SYSTCPRT)
- 8.4.5 Resolver trace (SYSTCPRE)
- 8.4.6 IKE daemon trace (SYSTCPIK)
- 8.4.7 Intrusion detection services trace (SYSTCPIS)
- 8.4.8 OSAENTA trace (SYSTCPOT)
- 8.4.9 Queued Direct I/O Diagnostic Synchronization
- 8.4.10 Network security services server trace (SYSTCPNS)
- 8.4.11 Obtaining component trace data with a dump
- 8.4.12 Analyzing a trace
- 8.4.13 Configuration profile trace
-
8.5 OSA-Express3 Network Traffic Analyzer
- 8.5.1 Determining the microcode level for OSA-Express3
- 8.5.2 Defining TRLE definitions
- 8.5.3 Checking TCPIP definitions
- 8.5.4 Customizing OSA-Express Network Traffic Analyzer
- 8.5.5 Defining a resource profile in RACF
- 8.5.6 Allocating a VSAM linear data set
- 8.5.7 Starting the OSAENTA trace
- 8.5.8 Operator command to query and display OSA information
- 8.5.9 OSM and OSX information
- 8.6 Additional tools for diagnosing CS for z/OS IP problems
-
8.7 MVS console support for selected TCP/IP commands
- 8.7.1 Concept
- 8.7.2 Commands and environments supported by EZACMD
- 8.7.3 When to use EZACMD
- 8.7.4 How to use the EZACMD command
- 8.7.5 Configuring z/OS for using the EZACMD
- 8.7.6 Using the EZACMD command in the z/OS console
- 8.7.7 Preparing the EZACMD command in z/OS TSO and z/OS NetView
- 8.7.8 Using EZACMD command from z/OS TSO
- 8.7.9 Integrating EZACMD into REXX programs in TSO and NetView
- 8.7.10 Protecting the EZACMD command
- 8.7.11 Diagnosis: diagnosing the EZACMD command
- 8.8 Additional information
- Chapter 9. z/OS in an ensemble
- Appendix A. IPv6 support
- Appendix B. Additional parameters and functions
- Appendix C. Examples used in our environment
- Appendix D. Our implementation environment
- Related publications
- Back cover
Product information
- Title: IBM z/OS V1R12 Communications Server TCP/IP Implementation: Volume 1 Base Functions, Connectivity, and Routing
- Author(s):
- Release date: April 2011
- Publisher(s): IBM Redbooks
- ISBN: 9780738435497
You might also like
book
Windows 7 Portable Command Guide: MCTS 70-680, and MCITP 70-685 and 70-686
With hundreds of Windows 7 OS commands, options, and command arguments to remember, a MCTS 70-680, …
book
Exam Cram: 70-291 Implementing, Managing, and Maintaining a Windows Server 2003 Network Infrastructure
MCSA/MCSE 70-291 Exam Cram, Second Edition is the #1 quick-study guide to passing the MCSA/MCSE 70-291 …
book
Introducing Windows Server® 2008
Take a first look at the next generation of Windows Server—with insights direct from the popular …
book
Windows PowerShell™ 2 For Dummies®
Prepare for the future of Microsoft automation with this no-nonsense guide Windows PowerShell 2 is the …