Packet switched network
• Packet-switched networks are specially designed for data communication.
• The source data are split into packets containing route or destination
identifications. The packets are routed toward the destination by packet-
switching nodes on the path through the network.
• The major drawback of the packet switched technology is that it usually
cannot provide a service for applications that require constant and low
delay.
• There are two basic types of packet-switched networks as illustrated in
Figure, virtual circuits and datagram transmission.
Packet switching – summary
• General characteristics
• can use packets of varying length
• packet is assigned an address and the necessary control information
• packets are placed in frames
• Each sent frame stored in a buffer (store & forward) in a receiving node and
its information is checked before re-sending -> delays but errorless
transmission possible
• In summary: packet handing by nodes consists of
• Packet-switched networks are specially designed for data communication.
• The source data are split into packets containing route or destination
identifications. The packets are routed toward the destination by packet-
switching nodes on the path through the network.
• The major drawback of the packet switched technology is that it usually
cannot provide a service for applications that require constant and low
delay.
• There are two basic types of packet-switched networks as illustrated in
Figure, virtual circuits and datagram transmission.
Packet switching – summary
• General characteristics
• can use packets of varying length
• packet is assigned an address and the necessary control information
• packets are placed in frames
• Each sent frame stored in a buffer (store & forward) in a receiving node and
its information is checked before re-sending -> delays but errorless
transmission possible
• In summary: packet handing by nodes consists of
