Installing and Administering OSI Transport Services

Chapter 3 95
Gathering Configuration Information
Using the Local Parameter Worksheet
X.25 If this subnetwork uses the X.25 link, then
regardless of whether CONS or CLNS is used, you
must provide the information requested.
Specifically, indicate all the X.25 cards being used
and a subaddress value (or the keyword NULL).
At least one subaddress/programmatic access pair
is required.
Each card is identified by its programmatic access
name. The programmatic access name is
determined by the X.25 link configuration. The
subaddress you provide is appended to the
configured X.121 address. This defines the SNPA
address that calling entities must specify to reach
OTS.
X.25 configuration files typically reside in /etc/x25.
Run x25stat -d <x25 device file> -c to
view the currently configured values for the
corresponding device file that is running. The
System Administrator Manager utility (SAM) can
also be used to view the X.25 configuration.
CONS/X.25 Specify all of the X.25 facilities that you wish to
use over this subnetwork.
ISO 8878 Support - If true, this results in the use
of the X.25 extended addressing facility, as
described by ISO 8878 (use of X.25 to provide
CONS). If you do not use this facility, your NSAP
should match the X.25 address (X.121 +
subaddress).
X.25 Standard - This indicates which X.25
standard versions are supported by the system. At
least one of these must be specified.
The most flexibility is afforded by enabling all
facilities supported by the network.