OSI/FTAM Configuration and Management Manual

Planning, Installing, and Configuring Tandem FTAM
OSI/FTAM Configuration and Management Manual—421944-001
3-2
Underlying Subsystems
Underlying Subsystems
You also need to understand how to configure the underlying Tandem OSI subsystems.
The configuration set up in the OSI manager MIB, through OSI/AS SCF commands,
configures the architecture of underlying subsystems, sets up OSI addressing
relationships, and establishes protocol parameters for the Session Layer and below.
In particular, the OSI manager MIB stores the OSI addresses used to communicate
across the OSI network. Your FTAM configuration (in the APLMGR MIB) selects from
and depends on these addresses. In addition, how you configure your TAPS, TSP, and
NSP processes and lower-layer protocol attributes can affect the operation and
performance of your FTAM applications. Addressing and Process Architecture
on this
page provides the basic information you need to know on configuring OSI addresses,
processes, and protocols for use by Tandem FTAM; the OSI/AS Configuration and
Management Manual provides the details of OSI/AS subsystem configuration.
Configuring for Interoperability
Your Tandem subsystem configuration at each OSI layer must be compatible with the
corresponding layer in the remote system. For example, if the remote Transport Layer is
configured for transport class 4, you must configure the TSP processes on the Tandem
system to use transport class 4. Similarly, if the remote X.25 configuration uses 1980
addressing mode, so must your X25AM configuration.
Addressing and Process Architecture
Because the Tandem OSI architecture is modular, you have considerable flexibility in
choosing how many APLMGR, FTAM initiator, FTAM responder, OSI manager, TAPS,
TSP, and NSP processes you configure and in what combinations you configure them.
This flexibility allows you to tailor your configuration to the needs of your applications.
The choices you make in selecting and combining these processes are closely related to
the components of an OSI address and how these components are referenced in making
FTAM associations. Before you configure Tandem FTAM, therefore, you should
understand the following topics:
•
Process Architecture Considerations on page 3-3
•
Configuration Information in the OSI Manager MIB on page 3-6
•
How Configured Information Is Used in Making FTAM Associations on page 3-11