Entering the IP Parameters
UM Basic Configuration L3P
Release
7.1
12/2011
2.1
IP Parameter Basics
27
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
notation, 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
leading 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:
APNIC (Asia Pacific Network Information Center) - Asia/Pacific Region
ARIN (American Registry for Internet Numbers) - Americas and Sub-
Sahara Africa
LACNIC (Regional Latin-American and Caribbean IP Address Registry) –
Latin America and some Caribbean Islands
RIPE NCC (Réseaux IP Européens) - Europe and Surrounding Regions
Class Network
address
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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