TCP/IP Configuration and Management Manual

Configuring the NonStop TCP/IP Subsystem
TCP/IP Configuration and Management Manual—427132-004
3-9
Configuration 2: Startup Files for a Host in a Subnet
Addressing Environment
HOST1 is a NonStop system that has two G4SA adapters which appear as two
separate hosts to the rest of the network. (You also can alias a subnet to use multiple
IP addresses for applications such as web-servers. For more information about alias
IP addresses, see the ALTER SUBNET Command
on page 4-31.) Although you could
use the same TCP/IP process ($ZTC0) to configure the hosts, this sample
configuration uses separate NonStop TCP/IP processes ($ZTC0 and $ZTC1).
Since the actual physical connections are not changing in this sample configuration,
the TCPIPUP2 file shown in Example 3-1 for HOST1 can be used here. That file is
therefore not shown in this subsection. The first file that has significant changes, and
that therefore must be shown, is the SCFSBNT file.
The SCFSBNT File
Use the SCFSBNT file shown in Example 3-4 to add and start SUBNETs and routes.
As stated earlier, SUBNETs and routes are subordinate to the NonStop TCP/IP
process. Therefore, SCFSBNT begins by assuming the NonStop TCP/IP process
$ZTC0. The NonStop TCP/IP process must be started to add SUBNETs and routes.
Figure 3-2. NonStop TCP/IP Environment Using Subnet Addressing
008VST .VSD
HOST1
HOST2
HOST3
HOST4
HOST5
HOST6
RTR1
RTR2
RTR3
Backbone
128.30.128.1 128.30.192.1
128.30.192.2
128.30.192.3
128.30.192.4
128.30.128.2 128.30.64.5
128.30.64.6
128.30.64.7
128.30.128.3 128.30.32.8
128.30.32.9
128.30.32.10