Ip Addressing; Ip Address Classes; Class A; Class B - Comtech EF Data Vipersat SLM-5650A User Manual

I P Ad d r e s s i n g

IP Addressing

An IP (Internet Protocol) address is a unique set of numbers assigned to a device
on a network to uniquely identify that device (by its IP address).
An IP address is a unique number composed of four octets, with each octet
separated by a dot. This notation style is called dotted decimal notation.
Each IP address can be broken down into two parts, as shown in the example
below:
• Network ID - In this example, the 128.121 portion of the IP address
• Host ID - The 188.201 portion of the IP address specifies a unique number

IP Address Classes

IP addresses are assigned to classes according the schedule shown in
Figure A-4. IP address classes are assigned as follows:

Class A

• 1.x.x.x to 126.x.x.x(0 and 127 are reserved)
• 126 Class As exist
• Can have 16,777,214 hosts on each Class A
• 8-bit network number
• 24-bit node number

Class B

• 128.0.x.x to 191.254.x.x
• 16,384 Class Bs exist
• Can have 65,354 hosts on each Class B
A-6
Example: 128.121.188.201
The first two octets are the network ID: 128.121
The second two octets are the host ID: 188.201
defines the network that a host belongs to, and is equivalent to a street
name in a mailing address.
assigned to the host on the network, and is equivalent to a house number in
a mailing address.
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