NET/MASTER Management Services (MS) System Management Guide

Configuring INMC Links
Supporting Remote Operations
105744 Tandem Computers Incorporated 9–7
The argument of the LINK operand means that the session definition is
subordinate to the link defined in the previous step (adding a link definition). A
session definition is affected by LINK RESET commands issued against the link to
which the session definition is subordinate. The argument of the TYPE operand
means that NonStop NET/MASTER MS communicates with the remote
management application over SNA.
Add one session definition per protocol, regardless of the number of communica-
tions lines. For example, if a NonStop NET/MASTER MS system on \NODEA is
connected to a NonStop NET/MASTER MS system on \NODEB by three X.25
lines and one Expand line, add one X.25 session definition and one PTP session
definition.
Add a unit definition for each device or subdevice used to transfer INMC data
blocks.
INMC uses information in a unit definition to coordinate data I/O with a device or
subdevice. For X.25 and SNA connections, a unit definition identifies a file-type
subdevice. For PTP connections, a unit definition identifies a file that will be used
to make contact with a NonStop NET/MASTER MS process responsible for INMC
processing on the other end of the link.
Use the UNIT DEFINE command to add a unit definition. This example defines a
unit that is subordinate to the session definition added in the previous step:
UNIT DEFINE=IBMU1 SESSION=SNA1 DEVICE=$BIT1.#SNX1
MODE=SECONDARY IOSIZE=1024 CONNECTDELAY=61
The argument of the SESSION operand means that the unit definition is subordi-
nate to the specified session. Units coordinate communication according to the
protocol specified in the session to which they are subordinate. Unit definitions
are affected by LINK START, LINK STOP, and LINK RESET commands issued
against the link to which their session definition is subordinate.
Add one unit definition for each LU (SNA sessions) and virtual circuit unit (X.25
sessions) used to communicate with the other end of the link. Each unit must have
a complementary unit on the other end of the link. For example, each primary
logical unit (PLU) must have a corresponding secondary logical unit (SLU), and
each active unit in an X.25 switched virtual circuit must have a corresponding
passive unit. Add one unit definition for communication with the PTP protocol.