TCP/IP Configuration and Management Manual

Configuring the NonStop TCP/IP Subsystem
TCP/IP Configuration and Management Manual—427132-004
3-8
Configuration 2: Startup Files for a Host in a Subnet
Addressing Environment
your own ECHO service. If you send an ECHO datagram to lan01 or lan02, you also
test the actual physical network connection for your HOST1 NonStop TCP/IP
environment.
Configuration 2: Startup Files for a Host in a Subnet Addressing
Environment
This environment consists of a backbone communications link that has three routers
leading to three subnets. Since subnet addressing is being used, the subnet mask
must be altered on those networks from the default of %hFFFF0000 to%hFFFFFF00.
This means that routing decisions must be based on the first three octets of the IP
address rather than on the first two. However, subnetting will not be implemented on
the backbone so that you can see how subnetting can coexist with networks that are
not using subnetting.
Only those configuration files which must be changed from the first sample
configuration will be shown; and only those lines within the files that are different will be
discussed. For a complete listing of the files and line-by-line explanation, see the
configuration files for HOST1 (TCPIPUP2 for HOST1 on page 3-3.) For router
configuration, consult the documentation provided by your vendor.