subnetting 0.0.1

IPv4 subnetting calculator CLI

subnetting.py is a CLI help neteng and sysadmin speed up subnetting, calculating and troubleshooting.

For more ops tools, check the master project repo [opsPykit](https://github.com/thimoonxy/opsPyKit).

## Usage
```
$ python subnetting.py --help
Usage: subnetting.py [options]

Options:
-i IP, --ip=IP
-c CIDR, --cidr=CIDR Specify the cidr of mask to query. e.g. --cidr 24,
indicates mask=255.255.255.0
-m MASK, --mask=MASK Specify the Dotted Decimal mask to query. e.g. -m
255.255.0.0
-h HOST_AMOUNT, --host_amount=HOST_AMOUNT
Specify the number of available hosts we want in each
subnet.
-s SUBNET_AMOUNT, --subnet_amount=SUBNET_AMOUNT
Specify the number of subnets we want.
-M MODE, --mode=MODE Specify Mode 1-9 to calculate or transfer.
-a, --all Details will be shown
-?, --help --help --all shows Mode details.
```

## Examples

#### Mode 1

- If want to know which network 192.168.141.111/28 belongs to, we run this:

```
$ subnetting.py -M 1 -i 192.168.141.111 -c 28
================================================================================================================================================================
avail_hosts netmask network_address first_avail_ip last_avail_ip broadcast_address
----------------------------------------------------------------------------------------------------------------------------------------------------------------
14 255.255.255.240 192.168.141.96 192.168.141.97 192.168.141.110 192.168.141.111
```

#### Mode 2

- If want to know what does /28 mean, run this:
```
$ subnetting.py --mode 2 --cidr 28
================================================================================================================================================================
mask hex_mask
----------------------------------------------------------------------------------------------------------------------------------------------------------------
255.255.255.240 FF.FF.FF.F0
```

#### Mode 3
- If want to know the cidr for 255.255.128.0, run this:
```
$ subnetting.py --mode 3 --mask 255.255.128.0
================================================================================================================================================================
mask cidr
----------------------------------------------------------------------------------------------------------------------------------------------------------------
255.255.128.0 17
```
- It also correct the invalid mask, e.g. 289 and 265 excess 255, and the last 128 is host address but not network:

```
$ subnetting.py --mode 3 --mask 289.265.128.128
================================================================================================================================================================
mask cidr
----------------------------------------------------------------------------------------------------------------------------------------------------------------
255.255.128.0 17
```

#### Mode 4
If require 2 subnets for C class network address 192.168.141.0, run this:
```
$ subnetting.py --mode 4 --ip 192.168.141.0 --subnet_amount 2
================================================================================================================================================================
cidr class type subnet_amount network_address_list avail_hosts
----------------------------------------------------------------------------------------------------------------------------------------------------------------
25 C subnet 2 Details listed below 126
================================================================================================================================================================
avail_hosts netmask network_address first_avail_ip last_avail_ip broadcast_address
----------------------------------------------------------------------------------------------------------------------------------------------------------------
126 255.255.255.128 192.168.141.0 192.168.141.1 192.168.141.126 192.168.141.127
126 255.255.255.128 192.168.141.128 192.168.141.129 192.168.141.254 192.168.141.255
```

#### Mode 5
- If require 50 available host addresses in each subnet of C class address 192.168.141.0, subnetting in this way:
```
$ subnetting.py --mode 5 --ip 192.168.141.0 --host_amount 50
================================================================================================================================================================
cidr class type subnet_amount network_address_list avail_hosts
----------------------------------------------------------------------------------------------------------------------------------------------------------------
26 C subnet 4 Details listed below 62
================================================================================================================================================================
avail_hosts netmask network_address first_avail_ip last_avail_ip broadcast_address
----------------------------------------------------------------------------------------------------------------------------------------------------------------
62 255.255.255.192 192.168.141.0 192.168.141.1 192.168.141.62 192.168.141.63
62 255.255.255.192 192.168.141.64 192.168.141.65 192.168.141.126 192.168.141.127
62 255.255.255.192 192.168.141.128 192.168.141.129 192.168.141.190 192.168.141.191
62 255.255.255.192 192.168.141.192 192.168.141.193 192.168.141.254 192.168.141.255

```
- If require too much hosts, it tells you a supernet is needed:
```
$ subnetting.py --mode 5 --ip 172.168.141.111 -h 2000000
================================================================================================================================================================
cidr class type subnet_amount network_address_list avail_hosts
----------------------------------------------------------------------------------------------------------------------------------------------------------------
11 B supernet 1 Details listed below 2097150
================================================================================================================================================================
avail_hosts netmask network_address first_avail_ip last_avail_ip broadcast_address
----------------------------------------------------------------------------------------------------------------------------------------------------------------
2097150 255.224.0.0 172.160.0.0 172.160.0.1 172.191.255.254 172.191.255.255



#### Mode 6 - 9

- If require ip address in different system, try mode 6-9:


$ subnetting.py --mode 6 --ip 192.168.141.123
================================================================================================================================================================
binstr hexstr long_int
----------------------------------------------------------------------------------------------------------------------------------------------------------------
11000000.10101000.10001101.01111011 C0.A8.8D.7B 3232271739

$ subnetting.py --mode 7 --ip 11000000.10101000.10001101.01111011
================================================================================================================================================================
ip hexstr long_int
----------------------------------------------------------------------------------------------------------------------------------------------------------------
192.168.141.123 C0.A8.8D.7B 3232271739


$ subnetting.py --mode 8 --ip c0.A8.8D.7B
================================================================================================================================================================
ip binstr long_int
----------------------------------------------------------------------------------------------------------------------------------------------------------------
192.168.141.123 11000000.10101000.10001101.01111011 3232271739


$ subnetting.py --mode 9 --ip 78912634876
================================================================================================================================================================
ip binstr hexstr
----------------------------------------------------------------------------------------------------------------------------------------------------------------
146.252.121.255 10010010.11111100.01111001.11111111 92.FC.79.FF



## Reference
For more ops tools, check [opsPykit](https://github.com/thimoonxy/opsPyKit).