When you enter a duplex, Cisco Systems does a bunch of things to your network infrastructure. Your router and switches will send out IP packets to all your devices. This includes your desktop, laptop, and phone. All of those IP packets are going to be in a duplex configuration. If you’re using the correct duplex settings, then everything will work fine. If they aren’t, you can make some life-altering mistakes.
But that’s not all. Cisco Systems is a complex piece of equipment with a lot of moving parts. It is also a hardware vendor. In order to make sure your duplex settings are correct, you need to do a bunch of configuring before your network goes live.
Cisco systems has a very deep set of knowledge and engineering behind it, so you can bet that it has a fair number of engineers and designers on staff. So in order for your network to do its job, you will need to do a bunch of configuring. But it’s not just configuring your network. You will need to do a whole lot of other setup too.
The main purpose of using a router or router-connected port is to allow you to run your traffic on it, so you don’t have to do any special setup for it. In fact, you can even enable it for you by using a local router via the port you’re using. This is a lot of setup for you.
How to create a network with the least amount of configuration.
First you need to setup the router in the first place. And of course, you need to configure your network interface. A network interface is basically basically a switch between the router and the computer you want to connect to your network.
So, you need to set your network interface to match your subnet. That is, if your router is configured to connect to a subnet of 192.168.1.0, then your network interface would be 192.168.1.1.
For the same reason, you should be careful setting up your network interface to match your subnet. If you have a subnet of 192.168.2.0, you’ll want to make sure your router is configured to connect to 192.168.1.1. And if you have a subnet of 192.168.1.2, you should be more vigilant than usual.
In some cases you just need to be more vigilant. For example, if your router is configured to allow you to see only one subnet, and you have a subnet mask of 255.255.255.0, you should be aware.
The big red warning sign in the bottom right corner of the network connection status page is telling you to be careful making that change. It is telling you that you need to be on the 192.168.1.1 network. Not the 192.168.1.0 network.