Classful IPv4 Addressing
The classful addressing concepts divide the address space into a fixed number of blocks and each block has a fixed number of hosts. In IPv4 addresses of class A, B & C the first part of the address is considered as net-id (Network id), and the second part of the address is called host-id. The size of these parts varies with the classes.
Net-id: The net-id denotes the address of the network.
Host-id: The hoist-id denotes the address of the host attached to the corresponding network.
ipv4
