September 27, 1971
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 not 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 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*). This category also includes the Network Control Center computer (Network Address 5) which is used solely for gathering statistics from the Network. Finally, included among these Hosts are the following:
Network Site Computer Address
7 Rand IBM-360
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.
* 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.
NETWORK SITE COMPUTER STATUS OR PREDICTION CONTRACT
1 UCLA SIGMA-7 Server John Postel 65 UCLA IBM-360 Remote Job Service now, Time-sharing in January Steve Wolf 2 SRI(NIC) PDP-10 October11 John Melvin 66 SRI(AI) PDP-10 November Len Chaiten 3 UCSB IBM-360 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-465 Soon Mike Padlipsky 70 MIT(DM) PDP-10 Server Bob Bressler 7 RAND IBM-360 User only Eric Harslem 71 RAND PDP-10 January Eric Harslem 8 SDC IBM-360 October 11 Bob Long 9 HARVARD PDP-10 Soon Bob Sundberg 73 HARVARD PDP-1 User only Bob Sundberg 10 LINCOLN IBM-360 Soon Joel Winnet 74 LINCOLN TX2 Uncertain Tom Barklow 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 Van Zoeren 15 PAOLI B6500 Uncertain John Cravits 16 AMES DDP-316 Terminal IMP Does not apply 17 MITRE DDP-316 Terminal IMP Does not apply 30 BBN DDP-316 Terminal IMP(Prototype) Does not apply NETWORK SITE COMPUTER DATE AND TIME (P.M.) ADDRESS 9/13 9/14 9/15 9/16 9/17 4:30 3:30 6:00 10:30 1:30 1 UCLA SIGMA 7 0 0 0 D D *65 UCLA PDP-10 0 0 0 0 0 2 SRI(NIC) PDP-10 D D D D D 66 SRI(AI) PDP-10 D D D D D 3 UCSB IBM-360 0 0 0 0 0 4 UTAH PDP-10 D D D D D 69 BBN PDP-10 0 1/2 0 0 T 1/2 0 6 MIT(Multics) DDP-645 R R R D 1/2 0 70 MIT(DM) PDP-10 T T T O 0 8 SDC IBM-360 D D D D T 9 HARVARD PDP-10 T D T T T 10 LINCOLN IBM-360 D 1/2 0 1/2 0 D T NETWORK SITE COMPUTER DATE AND TIME (P.M.) ADDRESS 9/20 9/21 9/22 9/23 9/24 12:30 4:30 3:30 2:00 5:00 1 UCLA SIGMA 7 D 0 D T 0 *65 UCLA PDP-10 D 0 0 0 0 2 SRI(NIC) PDP-10 D D 0 D D 66 SRI(AI) PDP-10 D D D D D 3 UCSB IBM-360 0 0 0 0 0 4 UTAH PDP-10 D D D D D 69 BBN PDP-10 0 1/2 0 0 1/2 0 0 6 MIT(Multics) DDP-645 D 1/2 0 T T R 70 MIT(DM) PDP-10 T 1/2 0 0 D TD 8 SDC IBM-360 D D D D D 9 HARVARD PDP-10 T D T D D 10 LINCOLN IBM-360 D D D 1/2 0 D where
D = Dead. (Destination Host either dead or inaccessible (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 responding any way to the initial RFC, although not dead.)
1/2 0 = 1/2 Open. (Destination Host opened a connection but then either immediately closed it, or did not respond any further.)
0 = Open. (Destination Host opened a connection and was accessible to users.
* 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 Kelly Tardif, Viagénie 10/99]