Basic HTML version of Foils prepared Dec. 6 98

Foil 45 SNA/APPN (1)

From Introduction to Network Protocols Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
Second generation of SNA
Components
  • APPN environment
  • Logical Units 6.2 - governs peer-to-peer communication in an SNA environment
  • Node Type 2.1 - logical entities that permit direct communication beetween nodes
  • Advanced Program to Program Computing - provides a set of programming conventions and protocols that implement LU6.2
Node types
  • Low-end nodes (LENs) - terminals
  • End Nodes (ENs) - terminal servers
  • Network Nodes (NNs) - routers

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