Ethernet Network Switches

Network switches are used for connecting many different computer terminals together, within a Local Area Network (LAN). Network switches are hardware devices used for this purpose that connect the many computers to each other. The purpose of making such a connection is the transfer of data and information between the various terminals on the LAN, and this is extremely useful.

In simplistic terms, Ethernet network switches are computer networking devices that are used to connect many machines together. They commonly operate at the Data Link Layer (or layer two) of the OSI model of networking. Network switches are far more effective than the old-fashioned network hubs as they transfer the data to only the specified destinations and hence, save up a lot of bandwidth. Some more of their benefits are that they are easier to manage and also carry a greater degree of network security.

Different kinds of Ethernet network switches that are available in the market allow different numbers of machines to be connected to the network, and the most common commercial Ethernet switches allow either 4 or 8 machines to be linked to the network. In order to add more computers to the LAN a method known as Daisy Chaining is adopted which is carried out by connecting the switches to each other.

What is an Ethernet Switch

So they are basically network bridges that transfer data at Ethernet rates. The standard that Ethernet networks are based on is the IEEE 802.3 standard which was developed in 1980. For a LAN to be eligible for Ethernet classification it must be able to carry 10/100 Mbit/s ports or 10/100/1000 Mbit/s ports. The largest size of Ethernet network switches can even go up to 10 Gbit/s ports.

A network that involves many different machines connected to each other, requires a central controlling unit. The Ethernet switch acts as the control center for this purpose and overlooks all the transfers and transmissions being carried out between the various sources and destinations. Along with the computers, there are printers, routers and other devices as well, that are connected to the network, and the Ethernet switches manage the transmission of different data packets across these many devices.

The most elementary use of these switches is to maintain and manage home networks or small office networks. Basic Ethernet switches for home networks or office networks can support up to 4 computers, a printer and an Internet router. Any kind of data can be transmitted between the various connected devices. The functioning of one machine does not interfere with the functioning of another, as each machine has their own amount of dedicated Internet bandwidth available to them.

Ethernet connection switches commonly make use of the CSMA/CD protocol, which denotes the Carrier Sense, Multiple Access with Collision Detection. Carrier Sense signifies that the network checks that there is a physical carrier that can actually carry the transmitted data across. Multiple Access means that all the machines are free to transmit data as long as no other machine is transmitting at that exact moment, and Collision Detection means that if two machines transmit data simultaneously then the corrupted data is immediately discarded and re-transmitted at different time intervals.

Ethernet network switches are the norm for home networks or small office networks now, and everyone would have used them at some point or the other. Data transmission has become a necessity now and any method that can make this process faster and smoother is always welcome.