Packet, Circuit, and Message Switching
The three switching paradigms that you are likely to encounter with IP networks (packet switching, circuit switching, and message switching) each have their own characteristics and requirements that you should consider before deciding which one best suits your network. The sections that follow define these switching paradigm characteristics and requirements.
Packet-Switched Networks
The Internet, and IP networks in general, are packet-switching networks.This means that all data is segmented into variable-length IP packets, which are then routed across the network as discrete entities, as shown in Figure 3-1. Each IP packet contains a source and a destination, as well as mechanisms to detect packet corruption. ...
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