Network Working Group
Request for Comments: 288
NIC: 8274
Obsoletes: None
Updates: 287
E. Westheimer
January 6, 1972


This RFC reports on the status of most Network Hosts from December 20 to December 30. (On December 24 and December 31 BBN celebrated Christmas and New Year's Day respectively.)

During these two weeks the Lincoln Labs TX2 (Network Address 112) 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            SITE            COMPUTER
      133                BBN             PDP-10 (B)
      15                 Case            PDP-10
      13                 Ames/(Paoli)    ILLIAC/(B6500)

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:

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

* 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.

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

ADDRESS                              PREDICTION         OBTAINED FROM

   1      UCLA         SIGMA-7       Server             John Postel
  65      UCLA         IBM-360/91    Remote Job Service 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        SOON               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
  *7      RAND         IBM-360/65    User only          Eric Harslem
  71      RAND         PDP-10        SOON               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      TX-2          Server             Tom Barkalow
  11      STANFORD     PDP-10        SOON               Andy Moorer
 *12      ILLINOIS     PDP-11        User only          John Cravits
 *13      CASE         PDP-10        March              Charles Rose
  14      CARNEGIE     PDP-10        SOON               Hal VanZoeren
   5      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.

   NETWORK                               12/20 12/21  12/22 12/23
                                         1700  1200  1400   1700
    1        UCLA          SIGMA-7          O    #D     O      O
   65*       UCLA          IBM-360/91       O     O     D      D
    2        SRI(NIC)      PDP-10           D     O     D      D
   66        SRI(AI)       PDP-10           D     D     D      D
    3        UCSB          IBM-360/75       T     D     D      T
    4        UTAH          PDP-10           O     O     D      D
   69        BBN           PDP-10           H     O     D      O
    6        MIT(Multics)  H-645            D     D     D      T
   70        MIT(DM)       PDP-10           O     O     H      O
   71        RAND          PDP-10           D     D     D      D
    8        SDC           IBM-360/67      #D    #D    #D     #D
    9        HARVARD       PDP-10           D     T     D      D
   10        LINCOLN LAB   IBM-360/67       H     H     H      D
   74        LINCOLN LAB   TX2              H     H    #D      T
   11        STANFORD      PDP-10           D     D     D      D
   14        CARNEGIE      PDP-10           D     D     D      D
   16        AMES          IBM-360/67       D     D     D      D
   NETWORK                               12/27 12/28 12/29 12/30
                                         1730  1300  1600  1400
    1        UCLA          SIGMA-7          T    #D     O     O
   65*       UCLA          IBM-360/91       O     O     O     O
    2        SRI(NIC)      PDP-10           D     D     D     D
   66        SRI(AI)       PDP-10           D     D     D     O
    3        UCSB          IBM-360/75       D     D     D     D
    4        UTAH          PDP-10           D     D     D     D
   69        BBN           PDP-10           O     O     O     H
    6        MIT(Multics)  H-645            O     O     O     O
   70        MIT(DM)       PDP-10           O     D     O     D
   71        RAND          PDP-10           D     D     D     D
    8        SDC           IBM-360/67       H    #D    #D    #D
    9        HARVARD       PDP-10           T     T     D     T
   10        LINCOLN LAB   IBM-360/67       D     H     T     T
   74        LINCOLN LAB   TX2              D     D    #D     H
   11        STANFORD      PDP-10           D     D     D     D
   14        CARNEGIE      PDP-10           D     D     D     D
   16        AMES          IBM-360/67       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 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 second)

* 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 indicated the 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 Kelly Tardif, Viagénie 10/99]