PACKET SWITCHING MESSAGE SWITCHING BECOMES PACKET SWITCHING IF "LOGICAL" MESSAGES ARE BROKEN UP INTO SMALLER UNITS WHOSE SIZES ARE CONVENIENT FOR THE NETWORK BEFORE TRANSMISSION. ADVANTAGES: TIME DIVISION MULTIPLEXING WORKS BETTER. LESS INFORMATION NEEDS TO BE RESENT IF AN ERROR OCCURS. MULTIPLE ROUTES CAN BE USED TO SPEED DELIVERY. MESSAGES MAY ARRIVE FASTER EVEN ON A SINGLE ROUTE.

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This page is part of a section of lecture slides related to " Switching Techniques " within the topic "Multi-machine Networks". Other slides within this section and other sections of slides for the topic "Multi-machine Networks" can be accessed using the links below. Too Many Wires DIRECT CONNECTIONS Switching Techniques The Telephone Network The Telephone Network (cont.) Circuit Switching A Path through the Phone System Phone System Data Services Message Switching Message Switching (cont.) PACKET SWITCHING Comparing Switching Techniques Comparing Switching Techniques (cont.) THE NEED FOR "PROTOCOLS" Broadcast Networks Broadcast Networks "Bus" Networks "Bus" Networks (cont.) A More Familiar "Bus" Network CSMA/CD = Ethernet + Appletalk Collision Detection Backoff Protocols Ethernet Advantages Ring Networks Ring Networks = Simplified Switching Token Rings Token Passing Advantages and Disadvantages of Rings