I think TCP and IP were all one layer at one point. It's possible the old IEN's, (which I'd heard would be on-line "soon" if they're not already), would have a spec for the combined TCP/IP, and it would probably use the terminology in use at the time. By the way, when I started at Digital to be the "Transport architect", DECnet's layers were layer3=Transport, and layer4=Network Services. Frankly I think Transport is a much better name for layer 3 than layer 4. Layer 4 happens just at the endnode. It's layer 3 that actually "transports" the data. Since I saw everyone getting confused when they'd be talking about "Network layer" or "transport layer", which was opposite in DECnet and OSI, I lobbied for changing the DECnet terms (since we didn't have the clout to change the OSI terminology). Instead of immediately swapping the names, we went through a few years of neutral terms..."routing layer" for layer 3, and "end-to-end layer" for layer 4. One of the things I've been meaning to chase down is ... why did anyone think "Transport" was a good name for layer 4? What does the word "transport" mean that has anything to do with what layer 4 does? Radia
Re: [Hist Trivia] IP Protocol Layers
Radia Perlman - Boston Center for Networking Tue, 17 Jul 2001 13:57:40 -0700
- [Hist Trivia] IP Protocol Lay... Timothy J. Salo
- Re: [Hist Trivia] IP Pro... Brian E Carpenter
- Re: [Hist Trivia] IP Pro... Joe Touch
- Re: [Hist Trivia] IP Pro... Radia Perlman - Boston Center for Networking
- Re: [Hist Trivia] IP... Dave Crocker
- Re: [Hist Trivia... Jim Fleming
- Re: [Hist Trivia] IP... vint cerf
- FW: [Hist Trivia] IP Pro... Polinsky, Steven
- Re: [Hist Trivia] IP Pro... Sean Doran
- Re: [Hist Trivia] IP Pro... Sean Doran
- Re: [Hist Trivia] IP Pro... Stuart Cheshire
- Re: [Hist Trivia] IP... vint cerf
- Re: Re: [Hist Trivia] IP... vint cerf
- Re: Re: [Hist Trivia... Jim Fleming