DOD and OSI

that's interesting, i hadn't realised there was actually an OSI protocol suite, as well as just the OSI ref model

DoD internet model is TCP/IP I've read of Its layers as NITA network interface, internetwork, transport, application Though I often hear of a "Link Layer"

OSI protocol suite, I don't think caught on, though perhaps some protocols did. There are 7 layers Physical,data link,network,transport,session,presentation,application PDNTSPA(ppl do not throw sausage pizza away) or APSTNDP(all ppl seem to need data processing).

The layers correspond. TCP/IP's network interface layer corresponds to OSI's physical and datalink layers. TCP/IP's internetwork layer corresponds to OSI's network layer. Transport corresponds to OSI's transport layer + maybe some session layer TCP/IP's application layer coresponds to OSI's S,P,A layers. or P and A. (or, TCP/IP doesn't have the S and P layers/ perhaps jsut a bit of S in the transport layer)

Since the layers corresopnd, people sometimes use OSI layer terminology on the TCP/IP model.

I'm not sure about this TCP/IP Link Layer. If it is between "network interface" and "internetwork" then TCP/IP would be a 5 layer model.

Once upon a time these protocols were a big deal. It was alot of fun installing 30 x 5/14" diskettes into a DOS station trying to make this work.... But after Al Gore invented the internet, most of these protocols went out to pasture.... Some would say, "thankfully."

Enjoy...