Chapter . SNA Infrastructure
Systems Network Architecture
Believe it or not, most of the networking concepts in this book are not new. Most networking issues were resolved in concept long ago when the same types of problems cropped up in the mainframe world. In fact, it is ironic that the trend towards web-based applications revives technologies similar to mainframe 3270 terminal applications.
IBM’s mainframe-network infrastructure is referred to as Systems Network Architecture (SNA, pronounced “snah”). SNA was the prevailing enterprise network infrastructure. It was developed in the 1970s at IBM with an overall architecture similar to the Open System Interconnection (OSI) reference model. A mainframe running Advanced Communication Facility/Virtual ...
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