charlesprabhu
08-16-2022, 12:48 AM
CIDR, also referred to as supernetting, assigns IP addresses to more efficiently distribute addresses.
This replaced the previous system based on Class A, B, and C networks.
When you have a group of IP addresses, it’s called a block.
CIDR blocks share the same prefix and contain the same number of bits.
Supernetting is the combination of multiple connecting CIDR blocks into a larger whole, sharing a common network prefix.
CIDR Block Characteristics
IP addresses in blocks are continuous
First address of a block is divisible by the number of addresses of a block
Size of the block should be a power of 2
Parts of CIDR IP addresses
Benefits of CIDR
Reduces entries in the routing table
Reduce wasted IP address space
This replaced the previous system based on Class A, B, and C networks.
When you have a group of IP addresses, it’s called a block.
CIDR blocks share the same prefix and contain the same number of bits.
Supernetting is the combination of multiple connecting CIDR blocks into a larger whole, sharing a common network prefix.
CIDR Block Characteristics
IP addresses in blocks are continuous
First address of a block is divisible by the number of addresses of a block
Size of the block should be a power of 2
Parts of CIDR IP addresses
Benefits of CIDR
Reduces entries in the routing table
Reduce wasted IP address space