Subnetting So what if you want to create several networks inside one network. To do this you need to know how to subnet an IP network. Why would you want to do this. There are several good reasons. first a network that is split up into several networks would have reduced network traffic, and this in turn would optimize the network performance. Troubleshooting would be easier, because it would be a easier task to identify where the problem was coming from. And finally this makes creating WAN‘s much easier.
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