Le 21/08/2011 06:03, Darren New nous fit lire :
> I believe you misread me.

I believe you have an issue of vocabulary.
Below IP is not a network (in IT terminology), but links.

Links can be connection-oriented or connectionless.
They can be point to point (like current rj45/c8p8 cables) or they can
be broadcasting media (like 10base5 and other ethernet coaxial cable).
They can even be multipoint (like ISDN and X.25).

The fact that most transmission occurs using TCP should not hide that
there is some other transport protocols above IP which do have their own
interest.

TCP is reliable and ordered. So it is often used.
But there is application who do not care about reliability and order
(such as video distribution: better skip a frame than freezing. same
goes for VoIP: delivery in time is more important; Such application then
use RTP, a protocol above UDP/IP (or when possible, directly above ATM)).

TCP covers 95% of applications, but there is more than TCP under the sun.

Post a reply to this message