Packet v Circuit Switching |
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Circuit Switching Advantages - Once connection is established, information is transmitted at a fixed data rate over the connection. - One of the key strengths is that it is transparent. Once a circuit is established, it appears as a direct connection to the two attached stations, no special networking knowledge is needed at either point. Packet Switching Advantages - Line efficiency is greater, as a single node to node link can be shared by many packets over a time. - Packets are cued up and transmitted as rapidly as possible over the link. - When traffic becomes heavy on a circuit switching network, some calls are blocked, that is the network refuses to accept additional connection requests until the load on the network decreases. In packet switching, packets are still accepted but delivery delay increases. - Priorities can be used. If a node has a number of packets queued for transmission, it can transmit the higher priority packets first. | |