packet switching also calledIPdatagram packetswitching. In the datagram approach, a message to be sent is first divided into small packets,40calledIP packets or datagrams, each with the same destination address. The individual IP packets include information on the packet's origin and destination, ...
The datagrams sent over the Internet have a specific structure, as diagrammed in Figure 4.1(a). The datagrams start with a formatted block of information on how routers are to pass the packet using the IP. This block is referred to as the “Internet Protocol header” or, more commonly,...
In packet switching networks using datagrams, datagrams are data packets which contain adequate header information so that they can be individually routed by all intermediate switching devices to the destination. These networks are called datagram networks since communication occurs via datagrams....