Data Gram Services

Data Gram Services

A datagram service is just like a basic messaging service. Unlike the complete service that session management provides, datagram data transfer services operate more like mailing a letter.

Datagram services are connectionless, no association exists between the sender and the receiver before the message is sent, thus, the status of the receiver is unknown.

Datagrams are unreliable in that no acknowledgements are sent, and no guarantee is provided that a datagram will or had reached its recipient.

Although a datagram can be addressed to a specific station, its main benefit is its ability to be sent to many stations simultaneously.