PAM Management Programming Manual

PAM Management Programming Manual—142481
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Introduction
This section provides an overview of PAM and of the facilities for managing PAM. The
following topics are included:
•
Overview of Features and Architecture on page 1-1 explains the role of PAM within
the system, and the features, standards compliance, and components of PAM.
•
Distributed Systems Management (DSM) Facilities on page 1-7 provides an
overview of all aspects of PAM subsystem management.
Overview of Features and Architecture
PAM provides a set of standard programmatic interfaces that allows you to write
applications without regard to the underlying physical local area network (LAN). These
standard interfaces eliminate the need for separate sets of code for specific LAN types.
The PAM subsystem provides access to token-ring or Ethernet LANs on a Himalaya
S-series system.
PAM Features
PAM provides the following features:
•
A port interface that applications can use by making file-system procedure calls.
•
A Subsystem Programmatic Interface (SPI) for the Subsystem Control Facility
(SCF) and management applications.
•
Isolation of the port interface so that it is independent of the underlying hardware
and software subsystems for the LAN attached to the system.
•
Backward compatibility with the Tandem LAN Access Method (TLAM) I/O
processes that provided the port interface on K-series systems, allowing applications
that used the port interface on K-series systems to migrate to S-series systems.
•
Access to Ethernet and token-ring networks through the ServerNet LAN Systems
Access (SLSA) subsystem. (For more information about the SLSA subsystem and
E4SAs, FESAs and TRSAs, refer to the LAN Configuration and Management
Manual.)
•
Support for SNAX to access the token-ring adapter.
Supported Protocols
PAM supports the IEEE 802.2 Logical Link Control standard (LLC Types 1 and 2),
IEEE 802.5 token-ring, and IEEE 802.3 Ethernet link-level interconnections to various
LANs. The Ethernet 4 ServerNet adapter (E4SA), Fast Ethernet ServerNet adapter
(FESA), and the Token Ring ServerNet adapter (TRSA) provide the LAN connections
on Himalaya S-series servers.