Let's assume for the simplicity sake that we have a flat layer 2 network - no routers - 500 PC's and one big subnet.
Let's say you had one big private Class B network 10.120.x.x... which would give you like 65k IP's... and by using 255.255.0.0 as the subnet mask.. each device understands 10.120 is the network and everything from 10.120.0.0 to 10.120.255.255 are hosts.
That makes sense to me.
A simple Class C - 256 IP addresses makes sense as well.
But what about subnetting to 255.255.254.0 which combines 2 Class C's to 512 or so hosts...
My question is... where is the RANGE defined? Let's say Host A is 10.120.50.50 with a subnet of 255.255.254.0 and Host B is 10.120.60.50.... they can talk right? But could 10.120.60.50 talk to 10.120.40.50? Shouldn't right? But could 10.120.50.50 talk to 10.120.40.50?
I know this is a simple answer... to a question that probably doesn't make sense.