The initial LAN to be introduced was the ethernet, which was developed by the Xerox Corporation's Palo Alto Research Center in 1972. Basically the ethernet switch is a LAN interconnection device that works as the data link layer of the OSI reference model. The switch will usually be found supporting several connected LANs, because it has more capability than an ethernet bridge.

Basically what a switch will do is send data only over the segments it needs to, to get the traffic where it is supposed to go. This feature of ethernet switches and bridges the band width bandwidth from getting wasted which can result from sending packet to parts of the network which don't need to receive the data. There are also other benefits like bettered security, enhanced management and the ability to operate some links in full duplex.

As mentioned before, these ethernet switches are Fully duplex capable devices. Link activity is indicated on each individual port by a series of lights. The majority of switches have a mirror part to which a network sniffer can be attached. Apart from that there are other tools that use Arp spoofing and broadcasting storms to fill up the tables in the switch causing it to spread to other ports, similar to a hub.

The uses and applications of an ethernet switch are several; The first among that it automatically divides the computer network into different segments. Not only that, ethernet switches don't share transmission media and neither do they have to listen to them. Switches have a significant bandwidth, as high as 200 mbps, and can function in duplex mode. The ethernet switch does not share bandwidth with other computers.

So how exactly do you install a switch?

Installing an Switch is a simple process. Here are the steps.

* First things first, empty all the included parts out of the bag and the switch with the cable.
* Plug the switch into the port in the wall or floor with the available ethernet cable.
* Now connect the other cable into any of the ports that are on your Ethernet switch.
* Plug the opposing end of the cable into your computer once that is complete.
* At this time, plug the small end of the cord that come with the switch into the ethernet switch and plug the larger end into an outlet.
* By finishing the above steps, you can detect link activity and the lights that show power on the front of your switch.

How to discern the switches' signals

* A green LED indicates power.
* Link-Activity can be known when the green light flashes. This only happens during network activity.