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Network Working Group                             Ellen Westheimer
NIC # 9633                                        BBN
RFC # 326                                         3 April 1972
Categories:  F, G.3
Updates:  RFC #319
Obsoletes:  None

                          NETWORK HOST STATUS

     This RFC reports on the status of most Network Hosts from
March 13 to March 24.  During this period the SRI-AI computer
became a server.

     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:

         Network
         Address                Site            Computer
         -------                ----            --------
           134                  MIT-AI          PDP-10
            13                  Case            PDP-10

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, 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

     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 April)
    2    SRI(NIC)      PDP-10          Server                  John Melvin
   66    SRI(AI)       PDP-10          Server                  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
 *158    BBN           TIP             User Only
                       (Prototype)
    6    MIT(Multics)  H-645           Server                  Mike Padlipsky
   70    MIT(DM)       PDP-10          Sever                   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-360/155     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          "Soon"                  Andy Moorer
  *12    ILLINOIS      PDP-11          User Only               John Cravits
  *13    CASE          PDP-10          June                    Charles Rose
   14    CARNEGIE      PDP-10          "Soon"                  Hal VanZoeren
  *15    AMES/(PAOLI)  ILLIAC          "Soon"                  John McConnell
                       (B6500)
   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
 *148    ETAC          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.






                                                                [Page 2]

SITE
 NO.  SITE                        DATE AND TIME (EASTERN)
----  ----                        -----------------------

                   3/13  3/14  3/15  3/16  3/17  3/20  3/21  3/22  3/23  3/24
                   1530  1400  1530  1430  1730  1400  1300  1700  1700  1300
  1   UCLA-NMC       O     O     O     O     D     O     O     O     O     O
 65   UCLA-CNN       O     O     O     O     O     O     O     O     O     D
  2   SRI-ARC       #D     D     O     O     O     D     D     D     D     T
 66   SRI-AI         D     D     D     D     O     D     D     D     D     D
  3   UCSB-MOD75     O     O     O     O     O     O     O     O     O     D
  4   UTAH-10        O     D     O     O     O     O     O     O     O     O
 69   BBN-TENEX      O     O     O     O     D     D     D     O     O     O
133   BBN-TENEXB    #D    #D    #D    #D    #D    #D    #D    #D    #D    #D
  6   MIT-Multics    D     T     D     D     D     H     D     O     O     O
 70   MIT-DMCG       H     O     O     O     T     O     H     O     O     H
 71   RAND-CSG       H     H     O     O     O     O     O     O     D     T
  8   SDC-ADEPT     #D    #D    #D    #D     H    #D    #D    #D     D    #D
  9   HARVARD-10     O     O     O     O     O     O     D     O     O     O
 10   L.L.-360       H     H     H     H     H     H     H     H     D     H
 74   L.L.- TX-2     O     O    #D     O     O     O     O     O     O     O
 11   STANFORD-AI    D     D     H     D     D     D     D     D     D     D
 14   CMU-10         D     D     D     H     H     D     H     D     O     H
 15   AMES-Illiac    D     D     D     D     D     D     D     D     D     D
 16   AMES-67        D     D     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.)

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.                   12/96   ]
















































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