HP-UX SNAplus2 R7 General Information

Introducing SNAplus2

Beneﬁts Provided by SNAplus2

You can have one or more separate SNAplus2 domains on the same physical network, using a unique name for each

different domain. A single SNAplus2 domain can correspond to a TCP/IP subnet, can be part of a TCP/IP subnet

(so that there are two or more separate SNAplus2 domains in the same subnet), or can span multiple subnets.

If the SNAplus2 domain has multiple servers, one server holds the master copy of the SNAplus2 conﬁguration.

This server is known as the master server. Other servers on the LAN can be identiﬁed as backup servers. The

conﬁguration 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.

HP-UX Clients

A client computer does not contain an SNA node; it holds only the information it needs to access servers on the

SNAplus2 LAN, and relies on a server to provide the necessary conﬁguration information.

Most of the details of using HP-UX clients are the same as those for a server, except that the client has no node

resources to deﬁne and manage.

Windows Clients

SNAplus2 enables machines running Microsoft Windows 2000, Windows XP, Windows Server 2003, Windows 3.1,

or Windows for Workgroups 3.11to act as clients in the SNAplus2 domain.

SNAplus2 provides API support for Windows clients. The following APIs are supported:

• FMI (used by 3270 emulation programs)

• APPC

• CPI-C

• LUA

• CSV

All of these APIs are binary compatible with the WOSA APIs used by Microsoft SNA Server, so third-party

applications supported by SNA Server (for example, 3270 emulation programs such as Attachmate Extra, NetSoft

Dynacom Elite, and Wall Data Rumba) are also supported by SNAplus2 Windows clients.

For more information about managing Windows clients, refer to

HP-UX SNAplus2 Administration Guide. For infor-

mation about Windows SNA APIs, refer to HP-UX SNAplus2 Administration Guide or your Windows SNA product

documentation.

2.3 Beneﬁts Provided by SNAplus2

SNAplus2 provides features and beneﬁts that range from simplifying conﬁguration and improving problem diagnosis

to enhancing network performance.

2.3.1 Easy Migration

When upgrading an older version of SNAplus2 to a newer version, you can preserve your present system

conﬁguration by using the SNAplus2 migration utilities. The migration utilities support all of the earlier versions

of SNAplus2.

Migration involves converting conﬁguration ﬁles from older versions of SNAplus2 into a format that the current

version of SNAplus2 can use. The migration procedure is described in detail in HP-UX SNAplus2 Migration Guide.

2.3.2 Easy Conﬁguration

SNAplus2 is designed with conﬁguration options and administration facilities that reduce conﬁguration time and

network complexity. For example: