    Network Working Group                           Ellen Westheimer
    NIC #10604                                      BBN
    RFC #362                                        28 June 1972
    Categories:  F, G.3
    Updates:  RFC #353
    Obsoletes:  None

                              NETWORK HOST STATUS

          This RFC reports on the status of most Network Hosts from June 5
    to June 16.  During this period the MIT Math Lab PDP-10 (Network
    address 198) became a server.

          No testing was done on June 6 due to an attempt to install the
    new IMP system.  No testing was done on June 9 as the prototype
    Terminal IMP was being used for software debugging.

          On June 16 the ARPA Terminal IMP (Network 156) was installed in
    Arlington, Virginia.

          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.  The only Host in this category is the PDP-10 at Case
    (Network address 13).

    2) Hosts which are currently intended to be users only.  Included here
    are the Terminal IMPs, which are presently in the Network (AMES,
    MITRE, NBS, ETAC, USC, GWC, NOAA, RADC, SAAC, BELVOIR, ARPA, 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
              Address                Site                Computer
              -------                ----                --------
                  7                 Rand                 IBM-360/65
                 73                 Harvard              PDP-1
                 12                 Illinois             PDP-11
                 19                 NBS                  PDP-11
                 23                 USC                  IBM-360/44

          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.

                                                                    [Page 1]

    STATUS OR
     SITE                                                       PREDICTIONS
    ADDRESS   SITE           COMPUTER    STATUS OR PREDICTION   OBTAINED FROM
    -------   ----           --------    --------------------   -------------
       1      UCLA           SIGMA-7     Server #Limited         Jon Postel
      65      UCLA           IBM-360/91  NETRJS now              Bob Braden
                                         (Telnet in June)
       2      SRI (NIC)      PDP-10      Server                  Jim White
      66      SRI (AI)       PDP-10      Server                  Len Chaiten
       3      UCSB           IBM-360/75  Server                  Ron Stoughton
       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      Server                  Jeff Rubin
     198      MIT (ML)       PDP-10      Server                  Jeff Rubin
      *7      RAND           IBM-360/65  User Only               Eric Harslem
      71      RAND           PDP-10      Server                  Eric Harslem
       8      SDC            IBM-370/155 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      Server                  Andy Moorer
     *12      ILLINOIS       PDP-11      User Only               John Cravits
     *13      CASE           PDP-10      June                    Charles Rose
      14      CARNEGIE       PDP-10      Server                  Hal VanZoeren
      15      AMES           ILLIAC      Server                  John McConnell
                             (PDP-10)
      16      AMES           IBM-360/67  "Soon"                  Wayne Hathaway
    *144      AMES           TIP         User Only
    *145      MITRE          TIP         User Only
    *146      RADC           TIP         User Only
     *19      NBS            PDP-11      User Only              Robert Rosenthal
    *147      NBS            TIP         User Only
    *148      ETAC           TIP         User Only
     *23      USC            IBM-360/44  User Now               James Pepin
    *151      USC            TIP         User Only
    *152      GWC            TIP         User Only
    *153      NOAA           TIP         User Only
    *154      SAAC           TIP         User Only
    *156      ARPA           TIP         User Only
    *158      BBN            TIP         User Only
                             (Prototype)
    ______________
    *Host not included in daily testing.
    #The NMC is a research site and would like to have prior arrangement
    with each user.

                                                                    [Page 2]

    NO.     SITE                          DATE AND TIME (EASTERN)
    ---     ----                          -----------------------
                             6/5   6/7   6/8   6/12  6/13  6/14  6/15  6/16
                             1330  1600  1200  1530  1230  1100  1230  1700

      1     UCLA-NMC           O     O     O     O     O    #D     O     O
     65     UCLA-CCN*          O     O     O     O     O    #D     O     O
      2     SRI-ARC            O     D     D     O     O     O     O     O
     66     SRI-AI             O     D     T     D     D     D    #D     D
      3     UCSB-MOD75         O     O     O     O     O     O     O     O
      4     UTAH-10            0     O     O     D     D     O     D     O
     69     BBN-TENEX          D     O     O     O     O     O     O     O
    133     BBN-TENEXB        #D    #D    #D    #D    #D    #D    #D    #D
      6     MIT-MULTICS        O     O     O     O     O     O     O     O
     70     MIT-DMCG           O     O     O     O     O     O     O     O
    134     MIT-AI             H     H     H     H     H     H     H     H
    194     MIT-ML             D     D     H     D     H     H     D     H
     71     RAND-CSG           O     D     O     D     O     O     O     O
      8     SDC-ADEPT         #D    #D    #D    #D    #D    #D    #D     D
      9     HARVARD-10         O     O     O     O    #D    #D    #D     O
     10     L.L.-360           H     D     H     D     H     H     H     H
     74     L.L.-TX-2          R    #D     O     O     O    #D     O     O
     11     STANFORD-AI        D     D     O     O     O     O     D     D
     14     CMU-10             D     O     O     O     O     T     O     O
     15     AMES-ILLIAC        T     O     O     O     D     O     O     O
     16     AMES-67            D     D     D     D     D     D     D     D

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

    F = Full (Destination Host opened a connection, informed user that all
        Network ports were in use, and immediately closed the connection.)

    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 users.)

    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.

                                                                    [Page 3]

           [ This RFC was put into machine readable form for entry ]
           [ into the online RFC archives by BBN Corp. under the   ]
           [ direction of Alex McKenzie.                      1/97 ]

                                                                    [Page 4]