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SVR-1630
Samsung Techwin CO.,Ltd.
2004.07.2001 (v 1.0)
75
2. Use an IP Address in a Local Network
2.1 Executive
Summary
When using the Internet, you connect to servers in other locations, receive information and exchange e-
mails using an IP address. You can’t get access to the Internet without an IP address.
At present, the public IP used worldwide is limited. There are 5 kinds of network holding multiple IPs
from Class A to Class E. In particular, the most common network is the Class C network.
2.2 IP Configuration and Network Class
1) IP Configuration
(xxx: 0 – 255)
2) Network Class
Classs A
: holds all IPs with numbers from 0 to 127 for X1.
- Network ID: X1
- Host ID: X2, X3, X4
- The Class A Networks available in the world are 128 in total.
Class B:
holds all IPs with numbers from 128 to 191 for X1.
- Network ID: X1, X2
- Host ID: X3, X4
- The Class B Networks available in the world are 65,534 in total.
Class C
: holds all IPs with numbers from 192 to 223 for X1.
- Network ID: X1, X2, X3
- Host ID: X4
- This class is the most commonly used IP address. The Class C Networks available in the world
are 2,097,152 in total.
Class D
: holds all IPs with numbers from 224 to 239 for X1.
- This is for Multicast and general users don’t use this network.
Class E:
holds all IPs with numbers from 240 to 255 for X1.
- This network is not currently used.
xxx xxx xxx xxx
X1 X2 X3 X4
