NS3000/iX NMMGR Screens Reference Manual - Edition 9 (36922-90040)

Chapter 9 203
FDDI 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 bits 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: 001–126
Network and node values of all zeros or all ones are not
allowed. These are special values.
Default value: No default, but a value must be supplied.
IP subnet mask (optional)
An IP subnet mask is used when configuring
subnetworks. The mask identifies which bits on an IP
address will be used to define a subnetwork. An IP
subnet mask is specified in the same format as an IP
address. The 32-bit mask is grouped in octets expressed
as decimal integers and delimited by a period “.” or a
space. For example, a mask for a class A network 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.