Introduction
CIDR stands for Classless Inter-Domain Routing and it way of allocating IP address or host in more efficient manner. It replaces the old way of allocating IP address on based of class system. This method allocate the IP Addresses or host in more efficient way and avoid waste of IP Addresses.
- Class A, 16 million host identifiers or IP Addresses.
- Class B, 65,535 host identifiers or IP Addresses.
- Class C, 254 host identifiers or IP Addresses.
Let's consider the Organization requiring around 500 IP Addresses or Host. In such cases, organizations have to go with a Class B IP distribution system where almost more than 60,000 IP addresses are wasted.
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