September, 1974, survey of New-Protocol Telnet servers
A September 1974 headcount of which ARPANET hosts ran the new Telnet protocol and which options they supported.
Dodds, D.W., "September, 1974, survey of New-Protocol Telnet servers", RFC 702, DOI 10.17487/RFC0702, September 1974, <https://www.rfc-editor.org/info/rfc702>.
@misc{rfc702,
series = {Request for Comments},
number = 702,
howpublished = {RFC 702},
publisher = {RFC Editor},
doi = {10.17487/RFC0702},
url = {https://www.rfc-editor.org/info/rfc702},
author = {D.W. Dodds},
title = {{September, 1974, survey of New-Protocol Telnet servers}},
pagetotal = 3,
year = 1974,
month = sep,
} RFC text
Network Working Group D.W. Dodds
RFC # 702 BBN-TENEXA
September 25, 1974
SEPTEMBER, 1974, SURVEY OF NEW-PROTOCOL TELNET SERVERS
LAST MONTH'S SURVEY PRODUCED A GRATIFYING AMOUNT OF FEEDBACK CLARIFYING
THE STATUS OF SEVERAL SITES; HOWEVER THERE HAVE BEEN VERY FEW CHANGES IN
THE STATUS OF HOST SERVERS. THE CHANGES IN THIS MONTH'S LIST, IN
NUMERICAL ORDER (HOST NUMBER THROUGHOUT ARE OCTAL):
UCLA-NMC IS NO LONGER A SERVER;
HOST 205 IS NOW BBN-TENEXD, A NEW SYSTEM (BBNB) IS NOW HOST 61;
RAND-RCC WAS ACCIDENTALLY OMITTED FROM THE PREVIOUS LIST;
SDC-LAB HAS BEEN TEMPORARILY ELIMINATED FROM THE LIST UNTIL IT RETURNS
TO THE NET;
I4-TENEXA (117) IS NOT A SERVER--KI4B-TENEX (217) IS, AND HAS BEEN ADDED
TO THE LIST;
AMES-67 FIXED A BUG, REVEALING TO THE WORLD THE NEW-PROTOCOL SERVER (NO
OPTIONS) THAT WAS THERE ALL ALONG;
ISI-DEVTENEX (226) AND USC-ECL (327) HAVE BEEN ADDED.
WHAT FOLLOWS IS AN UPDATE OF THE SUMMARY AND TABULATION THAT APPEARED
LAST MONTH.* THERE IS STILL A LONG WAY TO GO TO 100% NEW-PROTOCOL
IMPLEMENTATION.
TOTAL SERVER HOSTS 34 100%
NO NEW-PROT SERVER 21 62%
TOTAL NEW-PROT IMPLEM. 13 38%
NEW-PROT ON SOCKET 27,
OLD ON SOCKET 1 (2) 6 18%
NEW-PROT ON 1 AND 27 (3) 6 18%
NEW-PROT ON 1 ONLY 1 3%
NOTES:
* ALL DATA IN THIS REPORT WERE GATHERED VIA A SURVEYING PROGRAM RUN AT
VARIOUS TIMES, PLUS A FEW MANUAL CHECKS TO FILL OUT THE DATA. WHAT
IS REPORTED HERE IS THE WAY THE VARIOUS SERVERS WORK AS SEEN BY THE
NEW-PROTOCOL USER TELNET AT BBNA, AS OF 23 SEPT. 1974.
(2) THESE ARE THE SITES WHOSE OPERATION IS 100% CORRECT ACCORDING TO ALL
PROTOCOL AND CONVENTIONS, AS I UNDERSTAND THEM.
(3) WE REALIZE THAT SOME OF THE SERVERS THAT APPEAR HERE AS NEW-PROTOCOL
SERVERS ON SOCKET 1 ARE ACTUALLY SERVERS WHICH ATTEMPT TO
COMMUNICATE WITH BOTH OLD- AND NEW-PROTOCOL USER TELNETS ACCORDING
TO WHAT CONTROL SEQUENCES ARE RECEIVED.
TABULATION OF SERVER STATUS FOR ALL SERVER SITES:
HOST HOST SOCKET SOCKET NEW-PROT, OPTIONS
NO. NAME 1 27 IMPLETMENTED(IF ANY)
101 UCLA-CCN OLD X
201 UCLA-CCBS OLD X
2 SRI-ARC OLD X
102 SRI-AI OLD X
3 UCSB-MOD75 OLD X
4 UTAH-10 OLD X
105 BBN-TENEX OLD NEW I1, 3, 6; O3
205 BBN TENEXD OLD NEW I1, 3, 6; O3
305 BBN-TENEXA OLD NEW I1, 3, 6; O3
106 MIT-DMS NEW NEW I1, 3; O3
206 MIT-AI OLD X
306 MIT-ML OLD X
7 RAND-RCC OLD X
11 HARV-10 NEW X I1, 3; O3
12 LL-67 OLD X
112 LL-TX-2 OLD X
13 SU-AI NEW* NEW* I1, 3
15 CASE-10 OLD X
16 CMU-10B NEW NEW I1, 3; O3
116 CMU-10A NEW NEW I1, 3; O3
17 I4-TENEX OLD X
217 KI4B-TENEX OLD X
20 AMES-67 NEW NEW NONE
126 USC-ISI OLD X
226 ISI-DEVTENEX OLD X
27 USC-44 OLD X
327 USC-ECL OLD X
32 SDAC-44 OLD X
37 CCA-TENEX OLD X
40 PARC-MAXC OLD NEW I1,3,6; O3
43 UCSD-CC OLD NEW I0(!), 3; O0, 3
53 OFFICE-1 OLD X
54 MIT-MULTICS NEW NEW NONE
61 BBN-TENEXB OLD NEW I1, 3, 6; O3
KEY TO SERVER STATUS TABLE:
X NO SERVER AT THIS SOCKET
I# OPTION # IMPLEMENTED INCOMING TO USER
(SERVER SAYS "WILL #")
O# OPTION # IMPLEMENTED OUTGOING FROM USER
(SERVER SAYS "DO #")
(# IS OPTION NUMBER IN NEW PROTOCOL. ALL OPTIONS
IMPLEMENTED BY ANYONE ARE:
0 TRANSMIT-BINARY
1 ECHO
3 SUPPRESS-GO-AHEAD
6 TIMING-MARK)
NOTE: * THERE APPEARS TO BE A MINOR BUG IN SU-AI'S SERVER: IT SEEMS TO
SEND AN IMPROPER RESPONSE TO A REQUEST FOR OPTION 0.
[ This RFC was put into machine readable form for entry ]
[ into the online RFC archives by Alex McKenzie with ]
[ support from GTE, formerly BBN Corp. 11/99 ]
AI ELI5
On this page
§1Changes Since Last Month
The previous survey produced a gratifying amount of feedback clarifying the status of several sites, but there were very few changes in the status of host servers. The report lists them in numerical order, with host numbers in octal.
UCLA-NMC is no longer a server, and host 205 is now BBN-TENEXD. SDC-LAB is temporarily off the list, I4-TENEXA (117) is not a server while KI4B-TENEX (217) is, and AMES-67 fixed a bug that revealed a new-protocol server with no options. ISI-DEVTENEX (226) and USC-ECL (327) were added.
First comes a short list of who joined, who left and who fixed something since the last check.
§2The Tally
The summary counts 34 total server hosts. Of these, 21 (62%) have no new-protocol server and 13 (38%) implement it. Within the 13, six hosts run the new protocol on socket 27 and the old one on socket 1, six run the new protocol on both socket 1 and socket 27, and one runs it on socket 1 only.
The six old-on-1, new-on-27 sites are the ones whose operation is 100% correct as the author understands the protocol and conventions. Some servers listed on socket 1 actually try to talk to both old and new user Telnets depending on the control sequences received. SU-AI appears to have a minor bug, sending an improper response to a request for option 0.
About one in three computers had the new version ready and the rest were still on the old one. A few were mixed, and one had a small slip.
§3Reading the Server Table
The tabulation lists each host number and name, its status on socket 1 and socket 27, and the new-protocol options implemented. X means no server at that socket, I# means option # is implemented incoming to the user (the server says WILL #), and O# means it is implemented outgoing from the user (the server says DO #).
The options implemented by anyone are 0 (TRANSMIT-BINARY), 1 (ECHO), 3 (SUPPRESS-GO-AHEAD) and 6 (TIMING-MARK). Hosts such as BBN-TENEX list I1, 3, 6; O3, while AMES-67 and MIT-MULTICS list none.
The table is a report card with a row per computer and a few letters and numbers telling which extra features each one knows.
- 0TRANSMIT-BINARY — Option 0 in the new protocol.
- 1ECHO — Option 1 in the new protocol.
- 3SUPPRESS-GO-AHEAD — Option 3 in the new protocol.
- 6TIMING-MARK — Option 6 in the new protocol.