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


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 period.
*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.

                                                          "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.

  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 IMP.)

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.

#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]