IBM z/OS V1R12 Communications Server TCP/IP Implementation: Volume 1 Base Functions, Connectivity, and Routing

An IBM Redbooks publication

Published 26 April 2011, updated 06 November 2012

cover image

ISBN-10: 073843549X
ISBN-13: 9780738435497
IBM Form #: SG24-7896-00
(492 pages)

More options

Rate and comment

Authors: Mike Ebbers, Rama Ayyar, Octavio L. Ferreira, Gazi Karakus, Yukihiko Miyamoto, Joel Porterie, Andi Wijaya


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

Chapter 1. Introduction to Communications Server (TCP/IP)
Chapter 2. The resolver
Chapter 3. Base functions
Chapter 4. Connectivity
Chapter 5. Routing
Chapter 6. VLAN and Virtual MAC support
Chapter 7. Sysplex subplexing
Chapter 8. Diagnosis
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

Follow IBM Redbooks

Follow IBM Redbooks