SNAX/XF LU Network Services Manual

Adding an Application and Terminal to a Second System
Application Example
3–10 097841 Tandem Computers Incorporated
Operational Assumptions The following assumptions are made about operation:
LU3 and LU4 on \SYS1 can access the Inventory program on \SYS2. However,
LU5 on \SYS2 is a factory floor terminal used only for inventory purposes and can
access only the Inventory program on \SYS2.
LU3 and LU4 can initiate sessions with the Inventory program on \SYS2 through
the character-coded command INVENTORY.
When LU5 is started through SCF, it is automatically logged on to the Inventory
program.
LU3 and LU4 can log off from the Inventory program (just as they can from Order
Entry or TSO) and log on to another process. If LU5 logs off, it can log back on
only to the Inventory program.
LU5 will receive all Tandem ESS messages.
Configuration Assumptions The following assumptions are made about configuration:
$SSCP has been started on \SYS2, but no SET table has been built or made active.
Thus, although SNAX/XF is running, it has not yet initialized the LUNS
component of $SSCP. Consequently, a SET table is built using SNAXUTL and
specified as active through the SETTAB attribute of the SCF ALTER SUBSYS
$SSCP command.
One ESS table, named ESS2, is created on \SYS2. Like its counterpart on \SYS1, it
will not be flagged as a default table. No protocol will be specified in this table;
the terminal will therefore use the protocol specified through SCF, which is CRT.
The SCF ADD APPL command is used to give a subdevice name to the Tandem
Creator process running on \SYS2. This subdevice name is also placed in the
PLUNAME field of Inventory’s ESS table logon record, thus associating the
application with the Tandem Creator process.
ESS1 (the ESS table on \SYS1) is then updated so that it has both a logon record for
the Inventory program and an addition to the HELP menu telling the terminal
operator how to log on to this new process.
Because ESS2 is not a default table, it must be associated with LU5 by means of the
ESSTABLE attribute of the SCF ADD LU command. This command also specifies
AUTOLOGON “INVENTORY” so that the terminal is logged on to the Inventory
process automatically.