NonStop S-Series Planning and Configuration Guide (G06.29+)

Terms and Concepts
HP NonStop S-Series Planning and Configuration Guide—523303-021
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IP Addresses
IP Address Syntax
An IP address is a 32-bit numeric value. IP addresses are typically represented by
converting the bits to decimal values an octet (8 bits) at a time and separating each
octet’s decimal value by a period (.). This is referred to as dot notation, or dotted
decimal format. IP addresses are typically of the following form:
n.n.n.n
where n is a number in the range 0 through 255.
IP Address Classes
If you want to connect a LAN or a host through a gateway to any of the networks in the
Internet, you must apply to have a range of IP addresses assigned to you by the
Network Information Center (NIC) operated by SRI International.
Assigned IP addresses for general use are classified as Class A, B, or C. If your LAN
is stand-alone or private, you can choose a private set of IP addresses. In that case,
the typical use calls for all Class A addresses.
This figure shows how the 32 bits of an IP address are divided between the network
address and local address for each of the IP address classes.
VST913.vsd
Class A IP Address
0
Network
Address
(8 bits)
8Bit 0
Local Address
(24 bits)
16 24 31
Class B IP Address
1 0
Network Address
(16 bits)
8Bit 0
Local Address
(16 bits)
16 24 31
Class C IP Address
1 1 0
Network Address
(24 bits)
8Bit 0
Local Address
(8 bits)
16 24 31