Specifications

TCP/IP Network Characteristics
8-4
Setting an Internet Subnet Mask
The Internet subnet mask is used to partition the host section of an Internet
address into subnets. The default subnet mask depends on the class of the
Internet address that you assigned.
The following table lists these defaults:
Do Not Define the Subnet Mask in the /etc/bootptab File
Although some BOOTP implementations allow you to define a subnet mask
using the /etc/bootptab file, the network access server does not support this
feature. For more information, refer to the network access server software
installation documentation for your load host.
Changing the Subnet Mask
To change the subnet mask, use the CHANGE INTERNET SUBNET MASK
command. The following example shows how to change the subnet mask to
255.255.255.0:
Local> CHANGE INTERNET SUBNET MASK 255.255.255.0
Changing the Subnet Mask to the Default Value
To return the subnet mask to its default value after changing it, do the following:
Internet Address Class Default Subnet Mask
A 255.0.0.0
B 255.255.0.0
C 255.255.255.0
Step Action
1 Enter the following command:
Local> DEFINE INTERNET SUBNET MASK NONE
2 Reboot the access server.