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IETF RFC 240
Site Status
Last modified on Friday, January 23rd, 1998
 Permanent link to RFC 240
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Networking Group A. McKenzie
Request for Comments: 240 BBN
NIC #7665 30 September 1971
Categories: F, G.3 Rand 50ctu
Updates: none
Obsoletes: RFC 235
SITE STATUS
Due to extensive typographic errors in RFC #235, I have
decided to reissue the first of our experimental site status reports.
In compiling RFC #235, I followed the principle that
timeliness was somewhat more important than extremely careful editing;
this seemed to me to be in keeping with the original RFC philosophy. I
am sorry for any embarrassment this may have caused to anyone associated
with the Network, and accept full responsibility for the content of RFC
#235. I will try to do a better job in the future.
Alex McKenzie
SITE STATUS
Beginning with this RFC, BBN will report on the status of
most Network Hosts approximately once every two weeks. The information
for these reports will be gained from talking to people at each site,
and from experimental "data". These data will be the results of daily
attempts to log into each of the Hosts which might be accessible to a
Network user; the attempts will have been made from the BBN prototype
Terminal IMP at a random time each weekday.
Several Hosts are currently excluded from the daily testing.
These Hosts fall into two categories:
1) Hosts which are note expected to be functioning on the
Network as servers (available for use from other sites) for at
least a month. Included here are:
Network Site Computer
Address
71 Rand PDP-10
74 Lincoln TX2
11 Stanford PDP-10
PAGE 1 
RFC #240
13 Case PDP-10
14 Carnegie PDP-10
15 Paoli B6500
2) Hosts which are currently intended to be users only.
Included here are the Terminal IMPs presently in the Network
(AMES, MITRE, and BBN[1]). This category also includes the
Network Control Center computer (Network Address 5) which is
use solely for gathering statistics from the Network.
Finally, included among these Hosts are the following:
Network Site Computer
Address
7 Rand IBM-360/65
73 Harvard PDP-1
12 Illinois PDP-11
The tables on the next two pages condense the information on
Host status for September 13 through September 24.
PREDICTIONS
NETWORK SITE COMPUTER STATUS or PREDICTION OBTAINED
ADDRESS FROM
1 UCLA SIGMA - 7 Server Jon Postel
65 UCLA IBM-360/91 Remote Job Service now,
Time-sharing in January Steve Wolf
2 SRI(NIC) PDP-10 October 11 John Melvin
66 SRI(AI) PDP-10 November Len Chaiten
3 UCSB IBM-360-75 Server Jim White
4 UTAH PDP-10 "Soon" Barry Wessler
5 BBN DDP-516 NCC Alex McKenzie
69 BBN PDP-10 Server Dan Murphy
6 MIT(Multics) H-645 "Soon" Mike Padlipsky
70 MIT(DM) PDP-10 Server Bob Bressler
7 RAND IBM 360/65 User only Eric Harslem
71 RAND PDP-10 January Eric Harslem
8 SDC IBM-360/67 October 11 Bob Long
9 HARVARD PDP-10 "Soon" Bob Sundberg
73 HARVARD PDP-1 User only Bob Sundberg
10 LINCOLN IBM-360/67 "Soon" Joel Winnet
74 LINCOLN TX2 Uncertain Tom Barkalow
11 STANFORD PDP-10 November Andy Moorer
12 ILLINOIS PDP-11 User only John Cravits
13 CASE PDP-10 December 15 Charles Rose
14 CARNEGIE PDP-10 January Hal VanZoeren
15 PAOLI B6500 Uncertain John Cravits
PAGE 2
RFC #240
16 AMES TIP Installed
17 MITRE TIP Installed
30 BBN TIP Prototype
NETWORK SITE COMPUTER DATE AND TIME (P.M.)
ADDRESS 9/13 9/14 9/15 9/16 9/17 9/20
4:30 3:30 6:00 10:30 1:30 12:30
1 UCLA SIGMA-7 O O O D D D
65[2] UCLA IBM 360/91 O O O O O D
2 SRI(NIC) PDP-10 D D D D D D
66 SRI(AI) PDP-10 D D D D D D
3 UCSB IBM-360/75 O O O O O O
4 UTAH PDP-10 D D D D D D
69 BBN PDP-10 O 1/2 0 O T 1/2 O O
6 MIT(Multics) H-645 R R R D 1/2 O D
70 MIT(DM) PDP-10 T T T O O T
8 SDC IBM-360/67 D D D D T D
9 HARVARD PDP-10 T D T T T T
10 LINCOLN IBM-360/67 D 1/2 0 1/2 0 D T D
NETWORK SITE COMPUTER DATE AND TIME (P.M.)
ADDRESS 9/21 9/22 9/23 9/24
4:30 3:30 2:00 5:00
1 UCLA SIGMA-7 O D T O
65[2] UCLA IBM 360/91 O O O O
2 SRI(NIC) PDP-10 D O D D
66 SRI(AI) PDP-10 D D D D
3 UCSB IBM-360/75 O O O O
4 UTAH PDP-10 D D D D
69 BBN PDP-10 O 1/2 O O O
6 MIT(Multics) H-645 1/2 O T T R
70 MIT(DM) PDP-10 1/2 O O D D
8 SDC IBM-360/67 D D D D
9 HARVARD PDP-10 D T D D
10 LINCOLN IBM-360/67 D D 1/2 0 D
PAGE 3
RFC #240
where
D = Dead. (Destination Host either dead orinaccessible (due to
network partitioning or local IMP failure) from the BBN
Terminal IMP).
R = Refused. (Destination Host returned a CLS to the initial RFC.) T
= Timed Out. (Destination Host did not respond in any way to the
initial RFC, although not dead.)
1/2 0 = 1/2 Open. (Destination Host opened a connection but then
either immediately close it, or did not respond any
further.)
O = Open. (Destination Host opened a connection and was
accessible to users.)
Endnotes
[1] The BBN Terminal IMP (Network Address 158) is a prototype, and as
such is frequently not connected to the Network, but being used to
refine and debug the Terminal IMP programs.
[2] The UCLA IBM-360 is at the moment only able to handle Remote Job
Service. BBN is not equipped to test this, but is assuming that
receipt of their canned message indicates that RJS is also
functioning.
[ This RFC was put into machine readable form for entry ]
[ into the online RFC archives by Roy Zimmer 9/97 ]
PAGE 4
Site Status
RFC TOTAL SIZE: 7948 bytes
PUBLICATION DATE: Friday, January 23rd, 1998
LEGAL RIGHTS: The IETF Trust (see BCP 78)
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