Expand Management Programming Manual

COMMON DEFINITIONS
Data-Communications Standard Definitions
ZCOM-OBJ-LINE is an EXPAND line. In the EXPAND subsystem, a line
is the smallest entity that carries units of data between two
neighboring nodes. A line can be, for instance, a copper wire,
a fiber-optic cable, or a satellite link. Since a path between
neighboring nodes can consist of one or more lines, lines are
subordinate to paths in the hierarchy of objects.
ZCOM-OBJ-NULL refers to the EXPAND manager process. For EXPAND,
this object type can be used only with the GETVERSION command.
ZCOM-OBJ-PATH is an EXPAND path. In the EXPAND subsystem, a path
is a logical connection between any two nodes in the network.
A path between neighboring nodes consists of one or more lines;
commands that operate on a path change or report information
common to all lines in the path. A call to ABORT, START, or STOP
a path always aborts, starts, or stops all lines associated with
that path. Commands operate only on paths between neighboring
nodes.
ZCOM-OBJ-PROCESS is the EXPAND manager process, the NCP process
($NCP), or an EXPAND line-handler process running on a Tandem
NonStop system.
ZCOM-TKN-OBJNAME contains the name of an EXPAND object.
The object name of a LINE object or a PATH object is the name
of a specific line or path, respectively, configured on a single
system. These names are assigned at system-generation time, and
they are unique within a system.
The object name of the NULL object is the name of the EXPAND
manager process.
If a PROCESS object is the EXPAND manager process or the NCP
process ($NCP), its object name is the name of the process. If a
PROCESS object is a line-handler process, its object name is the
object name of a line or path controlled by the process.
Most EXPAND programmatic commands accept up to 30 object names.
ZCOM-TKN-OBJTYPE is included in each response record returned by
the EXPAND subsystem to identify the object type of the object
described in that response record. For the EXPAND subsystem, the
value of this token always matches the value of ZSPI-TKN-OBJECT-
TYPE.
ZCOM-TKN-SWITCH-CPU indicates that the SWITCH command is to
switch processes between processors. For more information, refer
to the SWITCH command in Section 7, "Commands and Responses."
6-7