Entering the IP Parameters
Basic - L3P
Release
4.0
11/07
2.1
IP Parameter Basics
3
2.1 IP Parameter Basics
2.1.1 IP address (version 4)
The IP addresses consist of 4 bytes. These 4 bytes are written in decimal no-
tation, separated by a decimal point.
Since 1992, five classes of IP address have been defined in the RFC 1340.
The network address is the fixed part of the IP address. The worldwide lead-
ing regulatory board for assigning network addresses is the IANA (Internet
Assigned Numbers Authority). If you require an IP address block, contact
your Internet service provider. Internet service providers should contact their
local higher-level organization:
X APNIC (Asia Pacific Network Information Center) - Asia/Pacific Region
X ARIN (American Registry for Internet Numbers) - Americas and Sub-Sa-
hara Africa
X LACNIC (Regional Latin-American and Caribbean IP Address Registry) –
Latin America and some Caribbean Islands
X RIPE NCC (Réseaux IP Européens) - Europe and Surrounding Regions
Class Network ad-
dress
Host address Address range
A 1 byte 3 bytes 1.0.0.0 to 126.255.255.255
B 2 bytes 2 bytes 128.0.0.0 to 191.255.255.255
C 3 bytes 1 byte 192.0.0.0 to 223.255.255.255
D 224.0.0.0 to 239.255.255.255
E 240.0.0.0 to 255.255.255.255
Table 2: IP address classes
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