I know how to do the classic "network addressing" when I am allowed to waste IP addresses. For example, if I need to hook up 9 computers, I could use a /28 subnet, which allows 16 hosts to be mapped within it see the Wikipedia article on CIDR for details.
But what if I am asked to minimize the number of wasted IP addresses?
For example in this case:
Imagine, there is a network 6 which has 8 computers.
We see that if the IP address wasting was not allowed, then the network 6 would use the unused range: 22.214.171.124 – 126.96.36.199
So, the network 6 would look like this:
- network address: 188.8.131.52
- subnet mask: 28
- 1st address of network: 184.108.40.206
- last address of network: 220.127.116.11
- broadcast: 18.104.22.168
What if there is additional network 7 with only 10 computers?
Am I limited to only one CIDR subnet / network for each free unused range, or am I allowed to "put" as many different subnets as can possibly fit within the free unused address range?