Compaq OSI/APLMGR D43, OSI/FTAM D43 manual Architectural Overview, Management Interfaces

Introduction to the Compaq FTAM Responder Management Interfaces

Management Interfaces

For those people with access to the Compaq system who are responsible for configuring and managing FTAM responder processes and for solving FTAM problems, Compaq FTAM supports the Distributed Systems Management (DSM) management interfaces, which include the following:

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Subsystem Control Facility (SCF) PTrace utility

Operator message facility of the Event Management Service (EMS)

The use of these management utilities with Compaq FTAM is described in the OSI/FTAM Configuration and Management Manual.

In addition, system managers and problem solvers on the Compaq system use the File Utility Program (FUP) to perform many functions on Compaq disk files, including copying and resecuring files. This utility is described in the File Utility Program (FUP) Reference Manual.

Architectural Overview

FTAM services facilitate communication between different computer systems in an OSI network. The communication link (at the FTAM level) created between two systems is called an association. Each system is further defined in terms of its function in the association. The system that creates and controls the association is called the initiating system. The system that responds to the initiating system is called the responding system. In Compaq FTAM, the initiating and responding functions are performed by separate processes.

The Compaq FTAM responder process services FTAM requests initiated from remote systems on the network, such as a request to read a file. The responder acts as an FTAM file server, mapping FTAM requests into file operations and providing a translation between Guardian file structures and FTAM file structures.

The Responder and Underlying Subsystems

To communicate over OSI networks, Compaq FTAM uses the services of the Compaq OSI/AS and OSI/TS subsystems, and either the Compaq LAN access method (TLAM) (or PAM for G06 and above releases), or the X.25 access method (X25AM), or TCP/IP. In turn, X25AM and TLAM depend on hardware controllers to provide the 802.3 communications protocol (for TLAM) and the X.25 communications protocol (for X25AM).

Figure 1-2 provides an overview of the Compaq FTAM responder and these underlying Compaq products. The figure illustrates how the Compaq FTAM responder and the underlying Compaq OSI subsystems support the layers of the OSI Reference Model for both LANs and WANs:

•The Compaq FTAM responder provides FTAM responder functions at the Application Layer.

OSI/FTAM Responder Manual—425199-001

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