Packet Switching

2313
The Network Core
The Network Core

Having examined the Internet's edge, let us now look into more deeply inside the network core - the network of packet switches and links that interconnects the internet's end systems. The following figure highlights the network core with thick, shaded lines.

Tags circuit switching, packet switching, transmission rate
1668
Circuit Switching
Circuit Switching

This blog is about computer networks, the Internet, and packet switching not about telephone networks and circuit switching. However, it is important to understand why the Internet and other computer networks use packet switching rather than the more traditional circuit-

Tags packet switching, circuit switching, host
3816
Multiplexing in Circuit-Switched Networks
Multiplexing in Circuit-Switched Networks

A circuit in a link is implemented with either frequency-division multiplexing (FDM) or time-division multiplexing (TDM). With FDM, the frequency spectrum of a link is divided up among the connections established across the link. Particularly, the link dedicates a frequency

Tags transmission rate, packet switching, circuit switching
3622
Packet Switching Versus Circuit Switching: Statistical Multiplexing
Packet Switching Versus Circuit Switching: Statistical Multiplexing

Having explained circuit switching and packet switching, let us compare the two. Opponents of packet switching have frequently argued that packet switching is not appropriate for real-time services (for example, telephone calls and video conference calls) because of its

Tags packet switching, circuit switching, transmission rate
4160
Delay, Loss, and Throughput in Packet-Switched Networks
Delay, Loss, and Throughput in Packet-Switched Networks

Back in "What is the Internet", we described that the Internet can be viewed as an infrastructure that gives services to allocated applications running on end systems. Preferably, we would like Internet services to be able to move as much data as we want between any two end

Tags throughput, host, packet switching
1580
History of Computer Networking and the Internet
History of Computer Networking and the Internet

So far what we have studied, presented an overview of the technology of computer networking and the Internet. You should know enough now to impress your family and friends! However, if you really want to be a big hit at the next cocktail party, you should sprinkle your

Tags circuit switching, timeshared computers, packet switching
1205
Proprietary Networks and Internetworking: 1972-1980
Proprietary Networks and Internetworking: 1972-1980

The early ARPAnet was a single, closed network. ln order to communicate with an ARPAnet host, one had to be really connected to another ARPAnet IMP. ln the early to mid-1970s additional stand-alone packet-switching networks besides ARPAnet came into being:

Tags packet switching, network, protocol
1943
Network-Assisted Congestion-Control Example: ATM ABR Congestion Control
Network-Assisted Congestion-Control Example: ATM ABR Congestion Control

We close this section with a brief case study of the congestion-control algorithm in ATM ABR - a protocol that takes a network-assisted approach toward congestion control. We emphasize that our objective here is not to describe aspects of the ATM architecture in great detail,

Tags congestion control, packet switching, transmission rate, tcp protocol
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