Internet Protocol hierarchy contains several classes of IP Addresses to be used efficiently
in various situations as per the requirement of hosts per network. Broadly, the IPv4
Addressing system is divided into five classes of IP Addresses. All the five classes are
identified by the first octet of IP Address.
The Internet Corporation for Assigned Names and Numbers is responsible for assigning
IP addresses.
The first octet referred here is the left most of all. The octets numbered as follows
depicting dotted decimal notation of IP Address:
The number of networks and the number of hosts per class can be derived by this
formula:
When calculating hosts’ IP addresses, 2 IP addresses are decreased because they cannot
be assigned to hosts, i.e. the first IP of a network is network number and the last IP is
reserved for Broadcast IP.
in various situations as per the requirement of hosts per network. Broadly, the IPv4
Addressing system is divided into five classes of IP Addresses. All the five classes are
identified by the first octet of IP Address.
The Internet Corporation for Assigned Names and Numbers is responsible for assigning
IP addresses.
The first octet referred here is the left most of all. The octets numbered as follows
depicting dotted decimal notation of IP Address:
formula:
be assigned to hosts, i.e. the first IP of a network is network number and the last IP is
reserved for Broadcast IP.
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