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Handbook of Fiber Optic Data Communication, 4th Edition by Casimer DeCusatis

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Case Study

Deploying Systems Network Architecture (SNA) in IP-Based Environments

The Mainframe Network as a TCP/IP Server

Stephen R. Guendert,      Brocade Communications, Gahanna, OH

Introduction

The modern IBM System z mainframe is the dominant online transaction processing (OLTP) server platform on the market today. System z–based OLTP applications such as DB2 and VSAM are used to facilitate and manage transactions in a number of industries such as banking, airline reservations, mail order, retail, and manufacturing. Probably the most widely installed OLTP product in the world historically and still today is IBM’s CICS (Customer Information Control System). Well known examples of mainframe-based online systems are bank ATM networks, government ...

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