HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

NOTE: The X.3 values that you configure here are initially downloaded to the PAD. As the terminal
characteristics of your session change, the X.25 software automatically downloads new values for
certain parameters. Do not be alarmed if the values of some parameters are different from the
values you initially specified.
1. At the SMH main window, highlight Networking and Communications and select Open
Item from the Actions menu.
2. At the Networking and Communications window, highlight X.25 PAD Services and select
Open Item from the Actions menu.
3. Highlight X.3 Sets of Parameters and select Open Item from the Actions menu.
SMH displays an object list showing all X.3 sets or profiles currently configured.
4. Select Add from the Actions menu to configure an unlisted X.3 set, or highlight an X.3 set from
the list and select Modify.
When you select Add, SMH displays the Set X.3 Default Values dialog. This dialog lets you
set defaults for PAD terminal emulation, PAD support server, PAD printers server, or PAD UUCP
server.
5. Enter or modify field values as required. Click Help for information and instructions for each
field. A full description of X.3 parameters are provided in “PAD services” (page 94).
6. Click Apply to apply the new settings and to add additional X.3 sets. Click OK to save changes
and exit this dialog.
7. Select Exit from the List menu.
Configuring the high availability feature
The X.25 link software provides integration of the X.25/Streams solution to the High Availability
HP MC/ServiceGuard feature on HP 9000 Series 800 Systems, allowing local and remote failure
recovery.
This feature requires that the HP MC/ServiceGuard product (B3936AA) has been installed and
that the X.25 software uses switches that support Hunt Group Facility allowing multiple DTEs to
share a common X.121 address.
You should be familiar with the HP MC/ServiceGuard product prior to installation. For more
information on Serviceguard, see Managing MC/ServiceGuard.
The High Availability features include:
• Local Failure: Support of local failure for an X.25 link is provided by a PDN using existing
X.25 functionality. If a local X.25 PSI card fails, the calling DTE will see the link go down.
The Hunt Group facility results in all incoming calls being directed to the remaining “good”
X.25 PSI card in the system.
• Remote Failure: HP MC/ServiceGuard, uses the x25ifstate command to monitor the X.25
status. If the monitor detects that the X.25 link it is monitoring has gone down, all it has to do
is exit.
HP MC/ServiceGuard detects that the monitor service belonging to the package has
disappeared, stops the package, and starts the migration towards a second system.
The X.121 address of the first package is taken over by the second system from the X.25
configuration file.
58 Configuration