SNA Concepts & VTAM Implementation

Objectives
On successful completion of this course, attendees will be able to:

• define startup and session establishment procedures to VTAM
• reinforce understanding of SNA architecture implementation
• define network resources (major/minor nodes) to VTAM
• avoid the most common mistakes made by new users
• identify and code routing requirements for a VTAM network
• code the definitions to support cross-domain communication
• understand uses of VTAM console commands and communications controller hardware
• describe various backup/recovery facilities.

Who Should Attend
All those who support VTAM based networks in any capacity will benefit from this course.

Prerequisites
A knowledge of MVS concepts. A basic understanding of network concepts would be helpful but is not mandatory.

Duration
2 days

Course Code
VT

Contents
Introduction
What is SNA?; hardware and software; nodes and datalinks; SNA layers.


Network Accessible Units
SNA NAUs; SSCP functions; CMC and data hosts; PU types and functions; LU functions; NAU data flow; address awareness; network addresses and message format.


SNA sessions
Sessions and half-sessions; half-session layers; session types; setup flows; initiation sequences; logon request processing; LU-LU session types.


Network installation
Network planning; MVS considerations; Network related data sets; VTAM start procedure; SYS1.VTAMLST.


Network definitions
Major & minor nodes.


Applications & local terminals
Applications & local terminals; application major nodes; TSO sessions; SNA terminals; SNA major nodes; non-SNA terminals.


Console commands
Start; Display Net; Vary Net; Modify; Halt.


User tables
USS logon procedure; Mode tables; USS tables; USSCMD macro; USSPARM macro.


Multi-Systems Networking Facility
MSNF Terminology; Path control; transmission groups; explicit routes; PATH statement; Class of Service (COS); cross domain logon processing; cross domain resource managers; CDRSC definitions; cross domain resources.