@figuerres: Yes I know of UDP. What does it have to do with design of a network? I have never seen a design requirement in my life which states your comment. " Even with TCP the design says that stuff can happen and a good effort will be made to try and deal with it"
Hey Boss this is Gomer, I tested the network and it dropped a few little packets but looks pretty good. It tried real hard so I would say it passed.
Yes there is connected and unconnected packets. That was not the point. Even when I use UDP or multicast I prefer not to lose packets and to say you intended the design to lose packets is not what anyone would want. Also if you read what he said he was talking about collisions which are rare now with modern switches. This was more prevalent in old hub based connections. Also, we are talking about TCP/IP for the most part. But to answer your question I have heard of UDP and thanks for asking.