IPV4 ADDRESSES
IPV4 ADDRESSES CLASSFULL ADDRESSINGCLASSLESS ADESSING SPECIAL
ADDRESSING
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INTRODUCTION
An IPv4 address is a 32-bit address that uniquely and
universally defines the connection of a host or a router to the
Internet,
THE ADDRESS SPACE OF IPV4 IS 232 or 4 million.
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The address space of IPv4 is 232 or 4,294,967,296.
Note
Numbers in base 2, 16, and 256 .
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Figure 5.1 Dotted-decimal notation
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Change the following IPv4 addresses from binary notation to
dotted-decimal notation.a. 10000001 00001011 00001011 11101111b.
11000001 10000011 00011011 11111111c. 11100111 11011011 10001011
01101111d. 11111001 10011011 11111011 00001111
SolutionWe replace each group of 8 bits with its equivalent
decimal number (see Appendix B) and add dots for separation:a.
129.11.11.239b. 193.131.27.255c. 231.219.139.111d.
249.155.251.15Example 73/10/2017
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Find the number of addresses in a range if the first address is
146.102.29.0 and the last address is 146.102.32.255.
SolutionWe can subtract the first address from the last address
in base 256 (see Appendix B). The result is 0.0.3.255 in this base.
To find the number of addresses in the range (in decimal), we
convert this number to base 10 and add 1 to the result..
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Figure 5.3 Bitwise AND operation
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EXAMPLE:-103/10/2017
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Figure 5.2 Bitwise NOT operation
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The network address is the identifier of a network.
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Figure 5.21 Network mask
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In classless addressing, the prefix defines the network and the
suffixdefines the host.
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Example :-353/10/2017
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Example:-503/10/2017
