TCP/IP Configuration and Management Manual

NonStop Systems Used as Internet Gateways
TCP/IP Configuration and Management Manual—427132-004
F-4
Sample Configuration
This sample configuration provides configuration files for two NonStop systems
integrated into the NonStop TCP/IP environment shown in Figure F-6
. The
environment consists of a backbone communications link with three NonStop gateway
systems leading to three different networks. The gateway systems are GTWY1,
GTWY2, and GTWY3 They allow communication between six NonStop hosts; HOST1,
HOST2, HOST3, HOST4, HOST5 and HOST6.
The sample configuration first shows the configuration files for the NonStop host
named HOST1, and then shows the files for the NonStop gateway system (GTWY1) to
which it connects.
The IP addresses are Class B addresses. Network routing decisions are therefore
based upon the first two octets of the IP address. The sample configuration does not
implement subnet addressing. Thus, both systems use the default subnet mask,
%HFFFF0000. For information on subnet addressing, see Configuration 2: Startup
Files for a Host in a Subnet Addressing Environment on page 3-8 and Appendix B,
NonStop TCP/IP Processes and Protocols.
Figure F-5. A NonStop System as Two Logical Hosts Connected to a Subnet
022VST .VSD
LAN
Subnet1
Internet
Address
= 37.0.1.0
HOST3
37.0.1.3
HOST4
37.0.1.4
HOST5
37.0.1.5
HOST6
37.0.1.6
Adapter
Adapter
HOST1-NonStop
System
Internet Address
= 37.1.0.1
HOST2-NonStop
System
Internet Address
= 37.1.0.2