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data packet-switched network (DPN)

Data packet networks are based on data packet switching. In principle, this can be storage switching using the store-and-forward method or direct forwarding using the cut-through method. In the store-and-forward method, the data packets to be transmitted are first transmitted to the next network node, temporarily stored there, and then forwarded to the destination address via other nodes if necessary. At the receiver, the individual data packets are reassembled to form the original data stream.

The transmission network can be given a high degree of redundancy by meshing, so that alternative routes can be used in the event of failure or congestion of a transmission route. Over a data packet network, each data packet can be transmitted individually in loose sequence and reassembled into a complete message by the receiving station. In data packet networks, no direct (physical) connection is available between the two main ports. The line is only needed for the actual time of transmission, so several different virtual connections can exist on one line at the same time. Transmission takes place in partial links, so that the destination and content of a data packet can bechecked by each exchange. If the network nodes of the partial links are blocked, this is referred to as store-and-forward lockup.

In addition to the establishment of virtual connections, there is also the datagram service, in which each data packet forms a self-contained unit and is transmitted alone.

Englisch: data packet-switched network - DPN
Updated at: 30.07.2019
#Words: 235
Links: data packet, indium (In), method, network node (NN), address (A)
Translations: DE

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