Learning about network subsets - Overlapping addresses?
FroToast last edited by
So first of all, I'm not certain which topic this subject belongs to so I apologize in advance.
I've been having a hard time finding a straight forward answer to my question so I would be grateful if you would give me advice on this matter.
I've been told that subnets divided in such a way that you segment part of the 32-bit network address to mean the network, and the other half to mean host address? IE: (<network><host>)
In this sense is it possible to have an IP address - say for instance 220.127.116.11 - in the subnet of 18.104.22.168/24 and another same address in the subnet of 22.214.171.124/16?'
If so, would these two addresses be mutually exclusive?
Needless to say, networking isn't my profession, but I would still love to learn all about it. So, I would very much appreciate any advice or resources you would give me. :)
Thanks in advance,
If a host in subnet 126.96.36.199/16 tried to contact a host in 188.8.131.52/24 it would think it is on its local subnet and not try to route it to the gateway.
Be careful to distinguish between routes and subnets.
If a router has the following two routes:
192.168.3.0/24 to gateway 10.10.10.1
192.168.0.0/16 to gateway 10.10.10.2
That will work because the route with the longest mask will get the traffic.
coxhaus last edited by
Subnetting and superscoping are ways to address groups of IP addresses instead of individually. It makes for less code which makes it faster. There are a few gotcha like every network has a network address and a broadcast address which can be overlaid on a larger address space. You just need to be aware of it.
kpa last edited by
There's a nice CIDR/subnet calculator online that shows you exactly what addresses are part of a particular subnet and the details of the subnet in address/CIDR/netmask notations.