SNAX/XF LU Network Services Manual

The ADD LINE, PU, and LU Command Attributes
Using LUNS
2–24 097841 Tandem Computers Incorporated
Changing an LUs ESSTABLE Value
The ESSTABLE value for existing LUs can be changed with the ALTER LU command.
Removing the ESSTABLE Value
The ESSTABLE value can be removed from the line, PU, and LU with an ALTER
command by specifying a null string (“”) as the value for ESSTABLE.
Note If the ESSTABLE attribute is not specified for a line, PU, or LU, and a valid ESS table entry exists in the
SET table (it must be designated with the SNAXUTL ADD SETESS command as a default table), then
that ESS table becomes the table used by the LU.
NOACQ Attribute The syntax for the NOACQ attribute is as follows:
NOACQ { ON | OFF }
The value for NOACQ specifies whether an application program (PLU) can acquire a
terminal LU (SLU) that is subordinated to the line. NOACQ ON indicates that
SNAX/XF rejects any attempt to acquire this terminal LU: that is, the service manager
rejects any unsolicited open of an LU from a Tandem process or any unsolicited BIND
request from a host process.
ADD LINE
When the NOACQ attribute is specified by the line object, the value serves as a default
value for LUs on the line, with the following exception:
The value is not propagated to those LUs that have NOACQ specified at the LU
level with an ADD LU command.
ADD PU
When the NOACQ attribute is specified at the PU level, the value serves as a default
value for all LUs subordinated to that PU, with the following exception:
The value is not propagated to those LUs that have NOACQ specified at the LU
level with an ADD LU command.
ADD LU
When the NOACQ attribute is specified at the LU level, the value overrides any value
specified by the NOACQ attribute for the line or PU.
Switched Floating LUs
The default value is not propagated from the line to switched floating LUs. For
switched floating LUs, the NOACQ value must be specified with an ADD PU
command (which propagates the value to the switched floating LUs), or with an ADD
LU command.