PAM Management Programming Manual

Introduction
PAM Management Programming Manual—142481
1-8
Interactive Interfaces
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The Event Management Service (EMS) is an event-management interface that
includes printing and compatibility distributor processes that can print or display
event messages for operators.
SCF Interface
SCF provides the interactive interface for PAM. SCF operates on defined objects which
correspond to physical or functional entities and which have configurable attributes and
adhere to rules of operation such as object hierarchy.
SCF Object Hierarchy
The SCF objects for PAM correspond to software components within the subsystem.
Some objects are subordinate to others. Figure 1-4
shows the hierarchy of the objects in
PAM. Both the PORT and MSAP object are subordinate to the LINE object. The
PROCESS object is superior to the LINE object but shares the LINE object’s name. The
dotted lines between SNATR and LLC2 and SESSION indicate that SNAX/XF or
SNAX/APN have control over those PORT types. In addition to being subordinate to the
PORT object, the LLC2 and SESSION objects can be viewed as subordinate to the
SNATR MSAP object.
PROCESS Object
The PAM PROCESS object determines whether a PAM process is running in the
system. The PAM PROCESS object provides the interface to the ServerNet LAN
Systems Access (SLSA) subsystem for Ethernet and token ring. The PAM process also
generates Event Management Service (EMS) messages.
A PAM process is associated with a logical interface (LIF) in the SLSA subsystem.
When PAM is started either through a TACL RUN command or through the persistence
manager, the LIF is associated with the PAM process. The persistence manager is part of
the NonStop Kernel and starts generic processes including subsystem managers such as
Figure 1-4. PAM SCF Object Hierarchy
006CDT .CDD
PROCESS
LINE
PORT
MSAP
ETHERNET
LLC1
LLC2
SNATR
SESSION