Introduction
CIDR stands for Classless Inter-Domain Routing is also known as super netting is the method allocating IP Addresses which improves the efficiency of IP Address distribution and replaces the class-based (Class A, Class B, and Class C) IP distribution.
- Class A, with over 16 million identifiers
- Class B, with 65,535 identifiers
- Class C, with 254 host identifiers
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.