IBM and SNA

1
IBM and SNA

• Chapter 10

2
Systems Network Architecture

• SNA is IBMs premier communications network
  architecture and its protocols.
• At the time of development, most computer systems
  were host-centric.
• Today, SNA embraces host-centric as well as
  peer-to-peer characteristics.
• SNA can be compared to the OSI model.

3
SNA and OSI

• OSI was designed for openness and inter-
  operability between products and services of
  different vendors.
• SNA was motivated by IBMs desire to rationalize
  the diverse communications protocols development
  for its many products.
• Strong similarities are apparent.

4
Terms to be familiar with

• Physical Units (PUs).
• Logical Units (LUs).
• Customer Information Control Systems.
• Information Management Systems
• NETBIOS.