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Network Working Group                                   Ellen Westheimer
Request for Comments: #287                                           BBN
NIC: #8273                                              22 December 1971
Categories: F, G.3
Updates: RFC #267
Obsoletes: None

                        Status of Network Hosts

     This RFC reports on the status of most Network Hosts from
December 6 to December 18.  Due to hardware debugging, the BBN
prototype Terminal IMP (Network Address 158) was unavailable for most
of the two weeks from November 22 to December 6. There was, therefore,
no Host status reports for that period.

     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
   -------              ----                --------

     133                BBN                 PDP-10 (B)
      71                Rand                PDP-10
      13                Case                PDP-10
      15                Ames/(Paoli)        ILLIAC/(B6500)
      16                Ames                IBM-360/67

   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 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:











                                                                [Page 1]

   Network
   Address              Site                Computer
   -------              ----                --------

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

     The NBS Terminal IMP (Network Address 147) was installed in
Washington at the beginning of December.

     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 2]

NETWORK
ADDRESS SITE          COMPUTER           DAY, DATE AND TIME (EASTERN)
------- ----          --------           ----------------------------
                                      M      Tu       W      Th       F
                                    12/6    12/7    12/8    12/9    12/10
                                    1300    1700    1300    1300    1630

   1    UCLA          SIGMA-7         D       O       O       H       T

 *65    UCLA          IBM-360/91      H       H       D       H       H

   2    SRI (NIC)     PDP-10          D       T       D       D       D

  66    SRI (AI)      PDP-10          D       D       D       D       D

   3    UCSB          IBM-360/75      O       D       O       R       D

   4    UTAH          PDP-10          T       D       D       D       T

  69    BBN           PDP-10          D       D       D       D       T

   6    MIT (Multics) H-645           O       O       O       T       O

  70    MIT (DM)      PDP-10          O       O       D       D       O

   8    SDC           IBM-360/67     #D      #D      #D      #D      #D

   9    HARVARD       PDP-10          D       T       D       O       D

  10    LINCOLN LAB   IBM-360/67      D       D       D       D       H

  74    LINCOLN LAB   TX2             D       D       D       D       D

  11    STANFORD      PDP-10          D       D       D       D       D

  14    CARNAGIE      PDP-10          D       D       O       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.)




                                                                [Page 3]

NETWORK
ADDRESS SITE          COMPUTER           DAY, DATE AND TIME (EASTERN)
------- ----          --------           ----------------------------
                                      M      Tu       W      Th       F
                                    12/13   12/14   12/15   12/16   12/17
                                    1300    1700    1700    1600    1400
                                    1000    1400    1400    1300    1100

   1    UCLA          SIGMA-7         D      #D       D       O       O

 *65    UCLA          IBM-360/91      O      #D       D       O       O

   2    SRI (NIC)     PDP-10          D       D       D       T       O

  66    SRI (AI)      PDP-10          D       D       D       D       D

   3    UCSB          IBM-360/75      T       O       D       O       D

   4    UTAH          PDP-10          D       D       D       D       D

  69    BBN           PDP-10          T       H       H       O       T

   6    MIT (Multics) H-645           O       H       O       D       D

  70    MIT (DM)      PDP-10          D       O       D       O       O

   8    SDC           IBM-360/67     #D      #D      #D      #D      #D

   9    HARVARD       PDP-10          O       D       O       D       T

  10    LINCOLN LAB   IBM-360/67      H       D       H       H       H

  74    LINCOLN LAB   TX2             D       D       D       H       D

  11    STANFORD      PDP-10          D       D       D       D       D

  14    CARNAGIE      PDP-10          D       D       D       D       D

*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 NETJRS. We are assuming that initial connection to the NETRJS
logger indicates that NETJRS is also functioning.

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






                                                                [Page 4]

                                                         "STATUS OR
NETWORK                                                  PREDICTIONS"
ADDRESS SITE          COMPUTER    STATUS OR PREDICTION   OBTAINED FROM
------- ----          --------    --------------------   -------------

   1    UCLA          SIGMA-7     Server                 Jon Postel
  65    UCLA          IBM-360/91  Remote Job Service
                                  now, Telnet in April   Bob Braden
   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      "Soon"                 Barry Wessler
  *5    BBN (NCC)     DDP-516     Never                  Alex McKenzie
  69    BBN (TENEX)   PDP-10      Server                 Dan Murphy
*133    BBN (TENEX-B) PDP-10      Server (Experimental)  Dan Murphy
   6    MIT (Multics) H-645       Server                 Mike Padlipsky
  70    MIT (DM)      PDP-10      Server                 Bob Bressler
  *7    RAND          IBM-360/65  User only              Eric Harslem
 *71    RAND          PDP-10      January '72            Eric Harslem
   8    SDC           IBM-360/67  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 Winnet
  74    LINCOLN       TX2         "Soon"                 Tom Barkalow
  11    STANFORD      PDP-10      "Soon"                 Andy Moorer
 *12    ILLINOIS      PDP-11      User Only              John Cravits
 *13    CASE          PDP-10      March '72              Charles Rose
  14    CARNEGIE      PDP-10      January '72            Hal VanZoeren
 *15    AMES/(PAOLI)  ILLIAC/
                       (B6500)    September '62          John McConnel
 *16    AMES          IBM-360/67  Januray '72            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
                      (Prototype) User only

*Host not included in daily testing.

       [ This RFC was put into machine readable form for entry ]
          [ into the online RFC archives by Daniel Lang 4/97]









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