Subnet Calculator

A simple command-line subnet calculator written in Rust.

What it does

• Calculates subnet info based on a network address, CIDR, and number of hosts
• Handles multiple subnets
• Lets you input data manually or import from a CSV file
• Can save results as CSV or Markdown

Getting Started

1. Make sure you have Rust installed. If not, grab it from https://www.rust-lang.org/.

2. Clone this repo:

git clone https://github.com/LuMarans30/Subnetting-rust.git

3. Enter the directory:

cd Subnetting-rust

4. Build it:

cargo build --release

5. Run it:

./target/release/subnetting

Alternatively, precompiled binaries for most platforms are available.

Usage

Manual Input

1. Choose option 1
2. Type in your network address with CIDR (like 192.168.1.0/24)
3. Enter how many subnets you want
4. For each subnet, enter the number of hosts you need

CSV Import

1. Choose option 2
2. Enter the path to your CSV file

Your CSV should look like this:
(The first line is the initial network address with CIDR, then one line per subnet with the number of hosts)

<ip address>,<cidr>
<num_host_1>
<num_host_2>
...
<num_host_3>

Alternatively, you can use a slash ('/') as a delimiter:

<ip address>/<cidr>
<num_host_1>
<num_host_2>
...
<num_host_3>

What You'll Get

For each subnet, you'll see:

• Network address
• Subnet mask
• CIDR
• Subnet class
• Broadcast address
• Gateway
• First and last usable host addresses
• Request number of hosts
• Actual number of hosts
• How many IP addresses are wasted

You can save all this info to a CSV or Markdown file if you want.

Contributing

This project was created as a learning exercise. While it's primarily for personal use, suggestions and improvements are welcome. Feel free to open an issue or submit a pull request if you have ideas to enhance its functionality.

License

This project is open-source and available under the MIT License.