Tutorials

• Step 1: Binary IP Calculation

  Tutorial on Binary IP Calculation and explains decimal and binary conversion used in IP and subnetmask calculations.
  
  

• Step 2: Old-school IP Classes

  Tutorial on classic IP classes and associated subnet masks explaining ANDing and subnet mask function
  
  

• Step 3: Subnet Masking

  Tutorial explaining the subnet function in detail. How to determine hosts, networks and subnets
  
  

• Step 4: Subnetting backwards

  Tutorial on reverse calculation of the subnet mask. Determine networks and hosts based on an IP address and subnet mask
  
  

• Step 5: CIDR Addressing Scheme