Operation and Software Configuration
4.5
Assigning an Internet Address
To set up the unit to operate as an Internet node, you need to assign values for the SERVER
INTERNET ADDRESS and SERVER INTERNET SUBNET MASK characteristics. The
default for the INTERNET SUBNET MASK characteristic is set up so that the server will
calculate a subnet-mask based on the internet-address that you supply.
The following example shows how you would assign an internet-address for a terminal server
and change the SERVER INTERNET SUBNET MASK characteristic. In this example, the
server internet-address will be set to 128.3.0.100, and the server will be in a class B network.
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The following examples show the use of DEFINE commands (which change
parameters in the permanent database) and SET commands (which change
parameters temporarily). Alternatively, you can use only the DEFINE
command and re-initialize the terminal server.
First, specify the internet-address:
Xyplex>> DEFINE SERVER INTERNET ADDRESS 128.3.0.100
Xyplex>> SET SERVER INTERNET ADDRESS 128.3.0.100
(Note that the keyword "SERVER" indicates that the characteristic that you are specifying is a
server-wide characteristic. The keyword "INTERNET" indicates that you are assigning an
Internet-related characteristic. This model is used throughout the command syntax used by
the TCP/IP-LAT software.)
Next, specify the internet-subnet-mask. (By default the internet-subnet-mask will be
automatically calculated, based upon the class of network you specified for the internet-
address. If you later change the internet-address of the server, the internet-subnet-mask is
again re-calculated. You do not need to change internet-subnet-mask if you want the server to
use the internet-subnet-mask that the server calculated. Typically, you would only specify an
internet-subnet-mask if you are using sub-netting.) The following command shows how you
would specify a standard internet-subnet-mask for a class B network.
Xyplex>> DEFINE SERVER INTERNET SUBNET MASK 255.255.0.0
Xyplex>> SET SERVER INTERNET SUBNET MASK 255.255.0.0
If you assign a specific internet-subnet-mask, you should consider disabling the automatic
calculation of the internet-subnet-masks by the server. This will prevent the server from later
re-calculating the internet-subnet-mask if you change the internet-address. To do this, use the
commands:
Xyplex>> DEFINE SERVER INTERNET SUBNET MASK AUTOCONFIGURE DISABLED
Xyplex>> SET SERVER INTERNET SUBNET MASK AUTOCONFIGURE DISABLED
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