Network Working Group                                   Ellen Westheimer
Request for Comments: 315                                            BBN
NIC: 9345                                                  March 8, 1972
Updates: 306

                          NETWORK HOST STATUS

   This RFC reports on the status of most Network Hosts from February 14
   to February 25.  On February 21 Massachusetts celebrated Washington's
   Birthday.  During these two weeks the MIT Artificial Intelligence
   (MIT-AI) PDP-10, Network address 134, became a Network User.

   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) on a regular basis
      for at least two weeks.  Included here are:

      Address          Site            Computer
      -------          ----            --------
      134              MIT-AI          PDP-10
       13              Case            PDP-10
       15              Ames/(Paoli)    ILLIAC/(B6500)

      2) Hosts which are currently intended to be users only.  Included
      here are the Terminal IMP's which are presently in the Network
      (AMES, MITRE, NBS 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:

      Address          Site            Computer
      -------          ----            --------
       7               Rand            IBM-360/65
      73               Harvard         PDP-1
      12               Illinois        PDP-11
      19               NBS             PDP-11

   The tables on the next two pages summarize the Host status for this
   *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.

Westheimer                                                      [Page 1]
RFC 315                   Network Host Status                 March 1972

                                                          "STATUS OR
 SITE                                                     PREDICTIONS"
 -------  ----          --------    -------------------- --------------
    1     UCLA          SIGMA-7     Server #Limited      Jon Postel
   65     UCLA          IBM-360/91  NETRJS now           Bob Braden
                                    (Telnet in April)
    2     SRI(NIC)      PDP-10      Server               John Melvin
   66     SRI(AI)       PDP-10      "Soon"               Len Chaiten
    3     UCSB          IBM-360/75  Server               Jim White
    4     UTAH          PDP-10      Server               Barry Wessler
   *5     BBN(NCC)      DDP-516     Never                Alex McKenzie
   69     BBN(TENEX-A)  PDP-10      Server               Dan Murphy
 *133     BBN(TENEX-B)  PDP-10      Server(Exper.)       Dan Murphy
    6     MIT(Multics)  H-645       Server               Mike Padlipsky
   70     MIT(DM)       PDP-10      Server               Bob Bressler
 *134     MIT(AI)       PDP-10      User Now             Jeff Rubin
   *7     RAND          IBM-360/65  User only            Eric Harslem
   71     RAND          PDP-10      Server               Eric Harslem
   *8     SDC           IBM-370/15  Server               Bob Long
    9     HARVARD       PDP-10      Server               Bob Sundberg
  *73     HARVARD       PDP-1       User Only            Bob Sundberg
   10     LINCOLN       IBM-360/67  "Soon"               Joel Winett
   74     LINCOLN       TX-2        Server               Will Kantrowitz
   11     STANFORD      PDP-10      "Soon"               Andy Moorer
  *12     ILLINOIS      PDP-11      User Only            John Cravits
  *13     CASE          PDP-10      June                 Charles Rose
   14     CANERGIE      PDP-10      "Soon"               Hal VanZoeren
  *15     AMES/(PAOLI)  ILLIAC      September            John McConnell
   16     AMES          IBM-360/67  "Soon"               Wayne Hathaway
 *144     AMES          TIP         User Only
 *145     MITRE         TIP         User Only
  *19     NBS           PDP-11      User Only            Robert Rosenthal
 *147     NBS           TIP         User Only
 *158     BBN           TIP         User Only

   *Host not included in daily testing.

   #The NMC is a research site and would like to have prior arrangement
   with each user.

Westheimer                                                      [Page 2]
RFC 315                   Network Host Status                 March 1972

  NO.  SITE               DATE AND TIME (EASTERN)
 ----  ----               -----------------------
                  2/14  2/15  2/16  2/17  2/18  2/22  2/23  2/24  2/25
                  1830  1030  1730  1600  1200  1030  1500  1100  1500
   1   UCLA-NMC     O     O     O     O     0     O     D    #D     O
  65   UCLA-CCN     O     D     O     O     D     D     O     O     O
   2   SRI-ARC      O     O     O     O     D     O     O     O     O
  66   SRI-AI       D     D     D     D     D     D     D     D     D
   3   UCSB-MOD75   D    #D     O     O     O    #D     O     O     O
   4   UTAH-10      O     D     O     O     O     D     O     O     O
  69   BBN-TENEX    O     O     O     O     T     T     O     O     O
 133   BBN-TENEXB  #D    #D    #D    #D    #D    #D    #D    #D    #D
   6   MIT-Multic   O     O     T     T     O     D     D     D     D
  70   MIT-DMCG     O     O     O     D     T     O     H     O     D
  71   RAND-CSG     T     T     O     T     O     H     D     O     O
   8   SDC-ADEPT   #D    #D     H    #D    #D    #D    #D    #D    #D
   9   HARVARD-10  #D     D    #D     O     O     D    #D    #D    #D
  10   L.L.-67      H     D     H     H     H     H     H     H     H
  74   L.L.-TX-2   #T     O    #D     O     O     O    #D     O     O
  11   SU-AI        D     D     D     D     D     D     D     D     D
  14   CMU-10       D     D     H     D     H     H     H     D     D
  16   AMES-67      D     D     D     D     D     D     D     D     D


   D = Dead (Destination Host either dead or inaccessible [due to
       network partitioning or local IMP failure] from the BBN Terminal

   H = 1/2 Open (Destination Host opened a connection but then either
       immediately closed it, or did not respond any further.)

   O = Open (Destination Host opened a connection and was accessible to

   R = Refused (Destination Host returned a CLS to the initial RFC.)

   T = Timed out (Destination Host did not complete the ICP and open a
       connection within 60 seconds.)

   *The only service currently offered by the UCLA IBM-360/91 is a
   Network Job Service (NETRJS), however, the BBN Terminal IMP is not
   equipped to test NETRJS.  We are assuming that initial connection to
   the NETRJS logger indicates that NETRJS is also functioning.

Westheimer                                                      [Page 3]
RFC 315                   Network Host Status                 March 1972

   #These sites advertise that they may not have their system available
   at these times.

          [This RFC was put into machine readable form for entry]
      [into the online RFC archives by Hélène Morin, Viagénie, 12/99]

Westheimer                                                      [Page 4]