Cisco CCNA Certification: The (Numerous) Different Sorts Of Switching

When you are studying for your CCNA exam, whether you are taking the Intro-ICND path or the single-exam path, you happen to be rapidly introduced to the fact that switching happens at Layer two of the OSI model. Electronics Manufacturing contains further about the inner workings of it. No difficulty there, but then other terms involving switching are thrown in, and some of them can be more than a little confusing. What is "cell switching"? What is "circuit switching"? Most confusing of all, how can you have "packet switching"? Packets are discovered at Layer 3, but switching happens at Layer two. How can packets be switched?

Loosen up! As you'll see in this write-up, the terms are not that difficult to keep straight. Packet switching, for instance, describes a protocol that divides a message into packets just before they are sent. The packets are then sent individually, and might take various paths to the exact same destination. When the packets arrive at the final destination, they are reassembled.

Frame switching follows the very same approach, but at a various layer of the OSI model. Dig up extra information on site preview by going to our forceful site. When the protocol runs at Layer 2 rather than Layer three, the approach is referred to as frame switching.

Cell switching also does much the very same thing, but as the name implies, the device in use is a cell switch. Cell-switched packets are fixed in length. ATM is a common cell-switching technology.

The process of circuit switching is just a bit various, in that the approach of setting up the circuit itself is portion of the approach. The channel is set up amongst two parties, data is transmitted, and the channel is then torn down. To study more, we know you peep at: web address. The circuit-switching technology most familiar to CCNA candidates is ISDN.

Do not let these terms confuse you. The four distinct terms are describing considerably the very same process. The principal distinction is that they are occurring at distinct levels of the OSI model, and using a diverse transport method to get the information where it wants to go..