HP LaserJet 3055 All in One Printer - IP address structure and class

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IP address structure and class

An IP address is comprised of 32 bits of information and divided into 4 sections containing 1 byte
each section or 4 bytes total:

xxx.xxx.xxx.xxx

For efficiency in routing, networks were broken down into three classes, so routing can begin simply
by identifying the leading byte of information in the IP address. The three IP addresses that InterNIC
assigns are class A, B, and C. The network class determines what each of the four IP address
sections identify as shown below:

Table 9-7

IP address class format

Class

First Address Byte
xxx.

Second Address
Byte xxx.

Third Address Byte
xxx.

Fourth Address Byte
xxx

A

Network.

Host.

Host.

Host.

B

Network.

Network.

Host.

Host.

C

Network.

Network.

Network.

Host.

As illustrated in

Table 9-8 Network class characteristics

, each network class differs by the leading bit

identifier, the address range, the number of each type available, and the maximum number of hosts
each class allows.

184

Chapter 9 Networking

ENWW

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Table 9-8

Network class characteristics

Class

Network Class
Characteristics

Address Range

Maximum Number of
Networks in the Class

Maximum Hosts in
the Network

A

0

0.0.0.0 to
127.255.255.255.

126.

Over 16 Million.

B

10.

128.0.0.0 to
191.255.255.255.

16,382.

65,534.

C

110.

192.0.0.0 to
223.255.255.255.

Over 2 Million.

254.