TCP/IP Configuration and Management Manual

Configuring the NonStop TCP/IP Subsystem
TCP/IP Configuration and Management Manual—427132-004
3-13
WAN-Based Connections
WAN-Based Connections
This subsection describes startup files for configuring X.25 connections.
Configuring an X25AM I/O Process on NonStop
S-Series Systems and Integrity NonStop NS-series Systems
If your application requires you to configure a TCP/IP SUBNET of type X25, you must
have the X25AM I/O process configured first. See the X25AM Configuration and
Management Manual for information about configuring the X25AM I/O process but do
not be confused by the fact that the X25AM subsystem requires you first to start the
NonStop TCP/IP subsystem. On NonStop S-series systems and Integrity NonStop
NS-series systems, NonStop TCP/IP provides connectivity to the SWAN concentrator
for all I/O processes.
If you have followed the steps to bring up your NonStop S-series system or Integrity
NonStop NS-series system, NonStop TCP/IP is started.
Start the X25AM subsystem, then add TCP/IP SUBNETs of type X25.
If you are re-configuring your system after a cold-load,
1. Start your NonStop TCP/IP subsystem using the methods described in Section 1,
Configuration Quick Start and in Example 3-1 through Example 3-16 of this section
2. Start an X25AM I/O process by following the procedures described in the X25AM
Configuration and Management Manual.
3. Return to this manual and proceed with Configuration 3: Startup Files for Two
Hosts Using an X25AM-Based Connection on page 3-15.
Figure 3-3, Configuring a Subnet of Type X25
, shows two TCP/IP processes ($ZTC0
and $ZTC1) using X25 SUBNETs (IP1 and IP2). The requirement of providing a
TCP/IP interface to the LAN for X25AM is shown with IP0 which is an Ethernet
SUBNET running in $ZTC0.
X25AM accesses the X.25 line through SUBNET IP0, and SUBNETs IP1 and IP2
access the X.25 line through $X25P1 (the X25AM I/O process).
Note. As for LAN-based connections, the SLSA subsystem must be operational before you
can configure SUBNETs of type X25.
Note. If you are using X25 from an Integrity NonStop server, the system must be connected to
an IOMF2 customer replaceable unit (CRU) in a NonStop S-series system I/O enclosure to
access the hardware. (The software for X25 is available on the Integrity NonStop
NS-series server.) See the Introduction to Networking for HP Integrity NonStop NS-Series
Servers for more information about interconnectivity between the Integrity NonStop
NS-series system and NonStop S-series system for X25 communications.