CIDR
CIDR
Classless Inter-Domain Routing is a method for allocating IP addresses and for IP routing.
It is based on Variable-Length Subnet Masking (VLSM), in which network prefixes have variable length (as opposed to fixed-length prefixing of the classful network design).
CIDR notation uses a slash to describe the subnet. For example, 192.168.51.100/24 instead of 192.168.51.100 255.255.255.0
