I'm learning (or trying to) from the Windows Networking Essentials book. I'm struggling with the concept of subnetting. I've read the pages again, googled it, been for a walk and I still don't get it!
The book gives an example of a network with two subnets, like so:
Subnet 1
Network id: 192.168.129.0
Subnet mask: 255.255.255.192
Subnet 2
Network id: 10.80.128.0
Subnet mask: 255.255.224.0
I don't understand why we can't just do this:
Subnet a
Network id: 192.168.129.0
Subnet mask: 255.255.255.0
Subnet b
Network id: 192.168.130.0
Subnet mask: 255.255.255.0
I don't understand why one would borrow bits in the subnet mask as in 1 & 2, why wouldn't you just use a different network id like a & b?
It may be that I'm totally misunderstanding this, and if you have the Windows Networking Essentials book it's pp.100-108 :)