HP-UX SNAplus2 R7 Administration Guide

Managing SNAplus2 Client/Server Systems
IP Networking Requirements
11 Managing SNAplus2 Client/Server Systems
SNAplus2 can operate as a standalone system with all SNA components and applications on a single HP-UX system,
or can operate as part of a client/server domain. A client/server domain includes both servers (SNA nodes) and
clients (which can access SNA connectivity through a server).
In a domain with multiple SNAplus2 servers, one server holds the master copy of the SNAplus2 domain configuration
file. This server is known as the master server. You can define other servers in the domain to be backup servers.
The domain configuration file is copied to backup servers—either when they are started, or when the master copy
is changed—so that all backup servers hold a copy of the latest information.
Clients can be computers running the HP-UX operating system or the Microsoft Windows 2000, Windows XP,
Windows Server 2003, Windows 3.1, or Windows for Workgroups 3.11 operating systems.
Servers and clients communicate across the SNAplus2 domain using TCP/IP. A client can access one or more
servers at the same time, and can run concurrent applications as needed. For information about the networking
requirements for a client/server configuration, see Section 11.1,
IP Networking Requirements.
UNIX
For HP-UX clients, you must supply information about the SNAplus2 network and servers. For information about
this function, and for instructions on enabling and disabling the SNAplus2 software on HP-UX clients, see Section
11.4, Managing HP-UX Clients.
Some administration commands, defined in HP-UX SNAplus2 Administration Command Reference, explicitly
say that they can be issued from a HP-UX client. For all other commands, you can only issue command-line
administration commands from a client if you specify
-n with a server name. Such a command has the same effect
as if it were issued at the named server.
WINDOWS
There are two versions of the Windows client:
• The 32-bit Win32 client can be run on Microsoft Windows 2000, Windows XP, or Windows Server 2003.
• The 16-bit Win16 client can be run on Windows 3.1 and Windows for Workgroups 3.11.
For Windows clients, you must supply information that SNAplus2 can use to enable the client software. If you plan
to have invokable TPs on the Windows client, you must also supply information about the TPs. For information
about these functions, and for instructions on enabling and disabling the SNAplus2 software on a Windows client,
see Section 11.2, Managing Win32 clientsor Section 11.3, Managing Win16 Clients.
11.1 IP Networking Requirements
Before you can run SNAplus2 on a client computer, you must configure TCP/IP port addresses on both the clients
and servers in your network. If you encounter problems with the default port assignments, you may need to resolve
conflicts as described in Section 11.1.1, Setting Up IP Port Numbers.
In addition, you may wish to set clients up so that the TCP/IP connection is dropped automatically when the client
is finished using SNAplus2, as described in Section 11.1.2, LAN Access Timeout.
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