NS3000/iX NMMGR Screens Reference Manual - Edition 8 (36922-90038)

Chapter 12 261
Gateway Half Network Interface Configuration Screens
Internet Protocol Configuration
Addresses are made up of a network portion and a
node portion. The supported classes of network
addresses have the following forms:
Class C: C nnn.nnn.nnn xxx
Class B: B nnn.nnn xxx.xxx
Class A: A nnn xxx.xxx.xxx
where nnn is a value ranging from 000 to 255,
representing eight bit of the network portion of an
address and xxx is a value ranging from 000 to 255,
representing the node portion of an address.
The leftmost group of nnn has the following ranges for
each address class:
Class C: 192–223
Class B: 128–191
Class A: 001–126x
Default value: None
IP mask The IP mask masks a portion of the IP address for
subnets. The subnet is specified in the same format as
an IP address, that is, the 32-bit mask is grouped in
octets expressed as decimal integers and delimited by a
“.” or a space. For example, a mask for a class A address
with the subnet field being the first 8 bits of the node
portion would be expressed as 255 255.000.000. The
default is no IP mask.