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

78 Chapter5

LAN Network Interface Conﬁguration Screens

Internet Protocol Conﬁguration

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 where

xxx

is a value ranging from 000 to

255, representing the node portion of the 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 zeroes 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 of 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 either a period (.)

or a space. For example, a mask for a Class A network

with the subnet ﬁeld being the ﬁrst eight bits of the

node part would be expressed as 255 255.000.000. The

default is no IP subnet mask.

Refer to the HP 3000/iX Network Planning and

Conﬁguration Guide for more details on subnets.