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Enhanced Networking on IBM Z/VSE

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Enhanced Networking on IBM Z/VSE Front cover Enhanced Networking on IBM z/VSE Use LFP on Z/VM and in LPAR for selected applications Experience the benefits of OpenSSL Learn how to use IPv6 on z/VSE Joerg Schmidbauer Jeffrey Barnard Ingo Franzki Karsten Graul Don Stoever Rene Trumpp ibm.com/redbooks International Technical Support Organization Enhanced Networking on IBM z/VSE December 2014 SG24-8091-01 Note: Before using this information and the product it supports, read the information in “Notices” on page ix. Second Edition (December 2014) This edition (SG24-8091-01) applies to z/VSE V5 R2. © Copyright International Business Machines Corporation 2014. All rights reserved. Note to U.S. Government Users Restricted Rights -- Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Notices . ix Trademarks . .x Preface . xi The team who wrote this book . xi Now you can become a published author, too! . xii Comments welcome. xii Stay connected to IBM Redbooks . xiii IBM Redbooks promotions . .xv Summary of changes. xvii December 2014, Second Edition . xvii Chapter 1. Networking options overview . 1 1.1 Overview . 2 1.2 Hardware options . 2 1.2.1 OSA-Express . 2 1.2.2 OSA-Integrated Console Controller . 3 1.2.3 OSA-Express in QDIO mode . 4 1.2.4 OSA-Express . 5 1.2.5 OSA for NCP support . 5 1.2.6 Intra-Ensemble Data Network support . 6 1.2.7 OSA-Express multi-port support . 7 1.2.8 Using VTAM (SNA) and TCP/IP (non-QDIO) parallel on the same CHPID . 8 1.2.9 HiperSockets (IQD). 9 1.2.10 Virtual local area network . 10 1.2.11 Shared OSA adapter versus HiperSockets. 11 1.2.12 Using HiperSockets to communicate with Linux on System z . 11 1.2.13 QDIO buffer configuration . 12 1.2.14 Virtual OSA devices and VMAC . 14 1.2.15 OSAX Hotswap support . 15 1.3 Software options . 17 1.3.1 IPv4. 17 1.3.2 IPv6. 17 1.3.3 Why IPv6?. 18 1.3.4 Dual stack support . 18 1.3.5 Migration from IPv4 to IPv6. 18 1.3.6 IPv6 products for z/VSE . 19 1.3.7 Securing your connections with Secure Sockets Layer . 19 1.3.8 Options for printing . 20 1.3.9 Overview of APIs . 21 1.3.10 Available applications . 22 1.3.11 Choosing a socket API when designing your applications . 23 1.3.12 Enabling your applications for IPv6. 24 1.4 Known problems . 31 1.4.1 ERROR DURING OSA EXPRESS PROCESSING,REASON=002C CUU=nnnn,RETCODE=E00A . 31 © Copyright IBM Corp. 2014. All rights reserved. iii Chapter 2. TCP/IP for VSE/ESA . 33 2.1 Overview . 34 2.2 Standard features . 34 2.3 Other optional features . 34 2.4 Applications that are provided with TCP/IP for VSE . 35 2.5 Application programming interfaces . 35 2.6 Setting up and running TCP/IP for VSE . 36 2.7 FTP hints. 38 2.7.1 Internal FTP server suggestions . 38 2.7.2 Using external FTPBATCH servers . 38 2.8 Partition priorities . 39 2.9 Security . 40 2.10 Remote running with REXX . 40 2.11 Version checking. 43 2.12 Datagram analysis . 43 2.13 Known problems . 44 2.13.1 Routing in a subnet . 44 2.13.2 Using SSL ciphers . 44 2.13.3 Secure SSL port . 44 2.13.4 SSL client does not verify the server certificate . 45 2.13.5 TLS issue with IBM Personal Communications 6.0.7 . 45 Chapter 3. IPv6/VSE . 47 3.1 Overview . 48 3.2 Obtaining and activating a license key . 48 3.3 Stack setup . 49 3.3.1 IPv4 stack setup . 50.
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