Multi Datagram Messaging
Almost all networks have an upper bound of data that can be transmitted at a time. This size is known as maximum transfer unit (MTU). A message whose size is greater than MTU has to be fragmented into multiples of the MTU, and then each fragment has to be sent separately. Each packet is known as a datagram. Messages larger than the MTU are sent in miltipackets, and are known as multidatagram messages.