What is "datagrams"

Usage examples of "datagrams".

As with other datagram services, the NetBIOS datagrams are connectionless and unreliable.

Generally, TCP/IP applications use 4 layers: an application protocol such as mail, a protocol such as TCP that provides services need by many applications IP, which provides the basic service of getting datagrams to their destination the protocols needed to manage a specific physical medium, such as Ethernet or a point to point line.

However at some level, information from those connections is broken up into datagrams, and those datagrams are treated by the network as completely separate.

However while those datagrams are in transit, the network doesn't know that there is any connection between them.

TCP (the "transmission control protocol") is responsible for breaking up the message into datagrams, reassembling them at the other end, resending anything that gets lost, and putting things back in the right order.

This is used so that the other end can make sure that it gets the datagrams in the right order, and that it hasn't missed any.

This can happen when datagrams are forwarded through a network for which they are too big.

It uses the sequence numbers and other information to combine all the datagrams into the original file.

Recall that TCP is responsible for breaking up messages into datagrams, and reassembling them properly.

It also makes sure that the data arrives, resending datagrams where necessary.

UDP is designed for applications where you don't need to put sequences of datagrams together.

We assume that the system can send datagrams to any other system on its own network.

The software on that machine must be set up so that it will forward datagrams from one network to the other.

A computer at another institution would treat all datagrams addressed to 128.

It is then less expensive to send a single broadcast than to send datagrams individually to each host that is interested in the information.