TCP/IP (Parallel Library) Configuration and Management Manual

SCF Reference for Parallel Library TCP/IP
HP NonStop TCP/IP (Parallel Library) Configuration and Management Manual—522271-006
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MONITOR Object Type
MONITOR Object Type
The MONITOR object (TCPMON) provides the Parallel Library TCP/IP environment in
a processor. Only one TCPMON can exist in each configured processor. TCPMON has
the reserved name of $ZPTMn where n is the processor number (hexadecimal) where
TCPMON resides.
null Object Type
The null object is not an actual object type. The term “null” represents the lack of a
specified object. Any SCF command that supports the null object type is issued
without the specification of an object type. Commands support the null object type if
an object type is irrelevant (as for the VERSION command), or if they refer to a
collection of objects (as for with the NAMES command).
To issue an SCF command using the null object, specify the name of the SCF
command followed by a process name. The process name must be a valid NonStop
operating system process name. Do not use the term “null” when you issue the
command.
PROCESS Object Type
Two possible PROCESS objects can exist in the Parallel Library TCP/IP subsystem:
TCPSAM and TCPMAN. TCPSAM is the socket access method. TCPMAN is the
manager process. Both TCPMAN and TCPSAM run as process pairs. TCPMAN
provides management functions for the PTCPIP subsystem and communicates with
the TCPMONs in each processor. Only one TCPMAN process pair can exist in a
system; however any number of TCPSAM process pairs can run in a system.
Both the TCPMAN and TCPSAM processes can be started by using RUN commands.
In addition, the TCPMAN process can be started by using the persistence manager.
Only one name is supported for the TCPMAN process: $ZZTCP. You can assign any
name to the TCPSAM process.
When you assign a name to a TCPSAM process, HP recommends that you should use
a name that conforms to the conventions for process names. The recommended form
for TCPSAM process names is $ZTCx or $ZTCxx, where x is a letter or a numeric
digit; for example, $ZTC01. Most HP client and server programs expect the name of a
PTCPIP process to take this form. This convention allows applications to use a simple
screening algorithm to locate Parallel Library TCP/IP processes in a system.
However, since the conventional TCP/IP and Parallel Library TCP/IP environments
coexist on the system, an application programmer wishing to select one or the other of
the two environments needs to either obtain the PTCPIP process name from the
system administrator or use the SCF LISTDEV TCPIP command to determine the
Note. In the Parallel Library TCP/IP subsystem, a TCPMON can have more than one IP
address associated with it (one per subnet). However, each TCPMON must have a valid
TCPMON name, and each IP address must be unique within the network.