Mike Riches is a Senior Network Specialist within Maintenance and Technical Support Services, United Kingdom, providing remote technical support and on-site consultancy for IBM clients across Europe. He has 20 years of experience working with IBM networking software, the last nine of those working for IBM. His areas of expertise include z/OS Communications Server, SNA, APPN, HPR, EE and TCP/IP networking. Maulide Xavier is an IT Specialist in IBM Portugal. He has 13 years of experience in IBM mainframe and networking systems. His current responsibilities include network-related problem-solving in System z and supporting clients to implement a network infrastructure in complex environments. His areas of expertise include z/OS Communications Server, SNA, and TCP/IP networking. He holds a diploma in Business and Economics Applied Math from Instituto Superior de Economia and Gestao and a post graduation in Management of Information Systems from the same school. He is also a member of IBM Networking Software Support in Europe. Thanks to the following people for their contributions to this project: David Bennin Richard Conway Robert Haimowitz Bill White International Technical Support Organization, Poughkeepsie Center Andrew Arrowood Michael Gerlach Scott Moonen, the development sponsor Alan Packett IBM Communications Server Development, Raleigh Thanks to the authors of the previous editions of this book: Finally, we want to thank the authors of the previous z/OS Communications Server TCP/IP Implementation series for creating the groundwork for this series: Rama Ayyar, Valirio Braga, WenHong Chen, Demerson Cilloti, Gwen Dente, Sandra Elisa Freitag, Gilson Cesar de Oliveira, Mike Ebbers, Octavio L. Ferreira, Marco Giudici, Adi Horowitz, Michael Jensen, Gazi Karakus, Shizuka Katoh, Sherwin Lake, Bob Louden, Garth Madella, Yukihiko Miyamoto, Hajime Nagao, Shuo Ni, Carlos Bento Nonato, Yohko Ojima, Roland Peschke, Joel Porterie, Marc Price, Frederick James Rathweg, Micky Reichenberg, Larry Templeton, Rudi van Niekerk, Bill White, Thomas Wienert, Andi Wijaya, and Maulide Xavier. Now you can become a published author, too! Here's an opportunity to spotlight your skills, grow your career, and become a published author--all at the same time! Join an ITSO residency project and help write a book in your area of expertise, while honing your experience using leading-edge technologies. Your efforts will help to increase product acceptance and customer satisfaction, as you expand your network of technical contacts and relationships. Residencies run from two to six weeks in length, and you can participate either in person or as a remote resident working from your home base. Find out more about the residency program, browse the residency index, and apply online at: ibm.com/redbooks/residencies.html Preface xi