-
VTAM (Virtual Telecommunications Access Method) resides in the host and contains the SSCP, the PU for the host, and establishes the LU sessions within the host.
NCP (Network Control Program) resides in the communications controller (front end processor) and manages the routing and data link protocols.SNA Layers
SNA is implemented in functional layers starting with the application that triggers the communications down to the bottom layers which transmit packets from station to station. This layering is called a “protocol stack.” The SNA stack is compared with the OSI model below. Although SNA had major influence on the OSI model, there are differences in implementation.
Leave a Reply
You must be logged in to post a comment.