Online VLSM CIDR Subnet Calculator

1

• Online VLSM CIDR Subnet Calculator
  _at_ VlsmCalculator.Online

2
VLSM CIDR

• The biggest challange in networking is getting to
  know the boundaries of the network.
• It is mandatory to know where IP address starts
  and ends in the network.
• Variable Length Subnet Masking is a technique
  that allows network administrators to divide an
  IP address space to subnets of different sizes.
• CIDR has replaced the classful network design.
• VLSM/CIDR is a method of allocating IP addresses
  and routing Internet Protocol packets

3
Internet Protocol Version

• There are two types of IP Addresses
• IPV4 - It is the fourth version in the
  development of the Internet Protocol (IP). It is
  one of the core protocols of standards-based
  internetworking methods in the Internet.
• It has three classes namely, Class A, B, C with
  different range of IP address.
• IPV6 It is the most recently used IP address
  across the internet. The communications protocol
  that provides an identification and location
  system for computers on networks and routes
  traffic across the Internet.
• Compared to IPV4, IPV6 has larger address space
  with 128 bits.

4
IPV4 Class A
5
IPV4 Class B
6
IPV4 Class C
7
Subnet Masks

• A Subnet mask is a 32-bit number that masks an IP
  address, and divides the IP address into network
  address and host address.
• Subnet masks has been created for all three
  classes in IPV4.
• Network bits for Subnet masks Class A ranges from
  8 to 30.
• Network bits for Subnet masks Class B ranges from
  16 to 30.
• Network bits Subnet masks Class C ranges from 24
  to 30.

8
Subnet Mask Class A
9
Subnet Mask Class B
10
Subnet Mask Class C
11
IPV6

• You can convert IP address from Version 4 to
  latest version 6.
• IPV6 address are represented as eight groups and
  each group is separated by a colon ().
• You can compress and expand Internet Protocol
  Version 6 for your convenience.