subnet-calculators

This side-project aims to provide access to easy subnet calculations.

It does so by implementing the following classes:

• Networking/IP
  • This class represents an IPv4 address
• Networking/IPRange
  • This class represents a range of IPv4 addresses using 2 addresses, a start and an end
• Networking/CIDR
  • This class represents an IPv4 CIDR block, which is essentially a range of IP addresses

This project contains the following calculators:

• Unused Subnet Calculator
  • Summary: Given a network CIDR, and allocated subnet CIDRs, calculates unused subnets.
  • Inputs:
    • -n|--network-cidr is a CIDR block representing the entire virtual network
    • -a|--allocated-subnet-list is a list of CIDRs that have already been allocated for subnets. Conflicts with -f|--allocated-subnet-file
    • -f|--allocated-subnet-file is a relative filepath containing newline-separated CIDRs that have already been allocated for subnets. Conflicts with -a|--allocated-subnet-list
    • -m|--mask-filter is an output filter that will return all possible unused subnets with a specific mask (0-32)
  • Outputs:
    • Overview of network (CIDR notation, IP mask, IP range, total hosts)
    • List of all unused subnet CIDRs
    • (Optional) List of unused subnet CIDRs that match the mask filter