Dave Clark refers to the IP layer and the TCP layer in RFC817:
"The TCP layer, as well as the IP layer, performs a demultiplexing
He also cites: 1] Cohen and Postel, "On Protocol Multiplexing", Sixth
Data Communications Symposium, ACM/IEEE, November 1979,
Steven M. Polinsky
Goldman, Sachs & Co.
180 Maiden Lane
New York, NY 10038
212-902-3669 | Fax: 212-493-0107
From: Timothy J. Salo [mailto:salo(_at_)saloits(_dot_)com]
Sent: Tuesday, July 17, 2001 3:59 PM
Subject: [Hist Trivia] IP Protocol Layers
Can anyone point me to an early reference describing the Internet
protocol layers in IP terms, rather than OSI terms?
One recent text used the following terms. However, I don't know whether
this description has a long history, or is simply revisionist history.
Transport (TCP, UDP)
Internet (IP, etc.)
Network Interface (LAN and WAN technologies).
By 1983 the Internet protocols were already being recast in OSI terms.
Vint Cerf, in "The DoD Internet Architecture Model", described the
In May 1979, Jon Postel in IEN-94 ("Internet Protocol Handbook"; it was
small then - 1209 bytes) use the following layers:
Internet Protocol Handbook
Table of Contents
Internet Datagram Protocol IEN-80
Gateway Routing: An Implementation Specification IEN-30
User Datagram Protocol IEN-88
Transmission Control Protocol IEN-81
Multiplexing Protocol IEN-90
Name Server Protocol IEN-89
Internet Message Protocol IEN-85
Protocol Options IEN-92
Address Mappings IEN-91
Assigned Numbers IEN-93
Does anyone have a pointer to an early, more "traditional", non-OSI
description of the TCP/IP protocol layers?
(By the way, I found the concept behind RFC 157, "Invitation to the Second
Symposium on Problems in the Optimization of Data Communications Systems",
rather interesting. I must admit that I hadn't thought of submitting
spam as an RFC.)