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The role of the Network Control Program in Systems Network Architecture

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The role of NCP/VS in an SNA environment has been examined from a vantage point within the network looking outward toward the host application programs and the terminal facilities. Data link control, path control, and connection point management work together to oversee the network traffic while maintaining separation of the SNA functional layers. The NCP physical unit services component cooperates with the system services control point in the host to govern operation of the physical resources associated with the NCP, as well as to oversee sophisticated testing and statistics recording. Thus, network functions are distributed amongst the host computer and the communications controllers throughout the network.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

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IBM Systems Journal  (Volume:15 ,  Issue: 1 )