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Networking Group                             A. McKenzieRequest for Comments: 240                    BBNNIC #7665                                    30 September 1971Categories: F, G.3                           Rand 50ctuUpdates:  noneObsoletes:  RFC235SITE STATUS     Due to extensive typographic errors in RFC #235, I havedecided to reissue the first of our experimental site status reports.     In compiling RFC #235, I followed the principle thattimeliness was somewhat more important than extremely careful editing;this seemed to me to be in keeping with the original RFC philosophy.  Iam sorry for any embarrassment this may have caused to anyone associatedwith 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 ofmost Network Hosts approximately once every two weeks.  The informationfor these reports will be gained from talking to people at each site,and from experimental "data".  These data will be the results of dailyattempts to log into each of the Hosts which might be accessible to aNetwork user; the attempts will have been made from the BBN prototypeTerminal 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 onHost status for September 13 through September 24.                                                        PREDICTIONSNETWORK SITE         COMPUTER   STATUS or PREDICTION    OBTAINEDADDRESS                                                 FROM 1      UCLA         SIGMA - 7  Server                  Jon Postel65      UCLA       IBM-360/91 Remote Job Service now,                                Time-sharing in January Steve Wolf 2      SRI(NIC)     PDP-10     October 11              John Melvin66      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 McKenzie69      BBN        PDP-10     Server                  Dan Murphy 6      MIT(Multics) H-645      "Soon"                  Mike Padlipsky70      MIT(DM)    PDP-10     Server                  Bob Bressler 7      RAND         IBM 360/65 User only               Eric Harslem71      RAND       PDP-10     January                 Eric Harslem 8      SDC          IBM-360/67 October 11              Bob Long 9      HARVARD      PDP-10     "Soon"                  Bob Sundberg73      HARVARD    PDP-1      User only               Bob Sundberg10      LINCOLN    IBM-360/67 "Soon"                  Joel Winnet74      LINCOLN    TX2        Uncertain               Tom Barkalow11      STANFORD   PDP-10     November                Andy Moorer12      ILLINOIS   PDP-11     User only               John Cravits13      CASE       PDP-10     December 15             Charles Rose14      CARNEGIE   PDP-10     January                 Hal VanZoeren15      PAOLI      B6500      Uncertain               John Cravits                                                                [Page 2]

RFC #24016      AMES       TIP        Installed17      MITRE      TIP        Installed30      BBN        TIP        PrototypeNETWORK   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     D65[2]     UCLA      IBM 360/91   O     O     O     O     O     D 2        SRI(NIC)  PDP-10       D     D     D     D     D     D66        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     D69        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   D70        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     T10        LINCOLN IBM-360/67   D   1/2 0 1/2 0   D     T     DNETWORK   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     O65[2]     UCLA      IBM 360/91   O     O     O     O 2        SRI(NIC)  PDP-10       D     O     D     D66        SRI(AI) PDP-10       D     D     D     D 3        UCSB      IBM-360/75   O     O     O     O 4        UTAH      PDP-10       D     D     D     D69        BBN     PDP-10       O   1/2 O   O     O 6        MIT(Multics) H-645   1/2 O   T     T     R70        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     D10        LINCOLN IBM-360/67   D     D   1/2 0   D                                                                [Page 3]

RFC #240where  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]