Introduction to SNAplus2

 

SNAplus2 Components

 

preserved when the connection is re-established, do not make any

 

changes to the file in either domain while the LAN connection is broken.

 

Changes can still be made to the configuration of individual nodes.

 

SNAplus2 stores information about the master server and backup

 

 

servers in the file sna.net, known as the SNA network data file. The

 

master copy of this file is stored on the master server; any changes made

 

to it are automatically copied to all other servers in the same way that

 

changes to the domain configuration file are copied to backup servers.

 

You cannot edit the contents of the SNA network data file directly;

 

instead, SNAplus2 provides administration facilities to access the file.

 

(You can edit node configuration files directly when SNAplus2 is not

 

running; but in general you should use SNAplus2 administration

 

facilities to ensure that all configuration information is valid and

 

internally consistent.)

 

For more information about the SNA network data file, refer to the

 

HP-UX SNAplus2 Administration Command Reference.

 

HP-UX Clients

For UNIX

A client computer does not contain a configuration file or SNA network

 

data file. Instead, the client has a client network data file that holds the

 

information it needs to access servers on the SNAplus2 LAN. The client

 

relies on a server to provide the necessary configuration information.

 

Most of the details of using HP-UX client computers are the same as

 

those for a server, except that the client has no node resources to define

 

and manage. The following references provide more details about using a

 

client:

 

• To start and stop the SNAplus2 software, see Chapter 3,

 

“Administering SNAplus2.”

 

• To set up information required to support invokable TPs on the client,

 

see “Defining TPs”.

 

• To manage the SNA network information required to access servers

 

on the SNAplus2 LAN, see Chapter 11, “Managing SNAplus2

 

Clients,” or refer to the HP-UX SNAplus2 Administration Command

 

Reference.

 

• To manage diagnostics information (logging and tracing), see

 

“Diagnostic Tools”, or for more detailed information, refer to the

 

HP-UX SNAplus2 Diagnostics Guide.

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Chapter 2