Network Working Group                                      E. Wentheimer
Request for Comments: 252                       Bolt, Beranek and Newman
Category: F, G.3                                          8 October 1971
NIC: 7696


   The purpose of this RFC is to report on the recent status of most
   Network Hosts.  During September 27 through September 29 the BBN
   prototype Terminal IMP (Network Address 158) was inaccessible due to
   hardware debugging.  The Network was, therefore, not examined on
   these days.

   Three Hosts which were not officially able to act as Server's at the
   time of RFC #240 are now able to do so.  These Hosts are:

         NETWORK          SITE              COMPUTER
         ADDRESS
         2                SRI (NIC)         PDF-10
         6                MIT (Multics)     H-645
         9                HARVARD           PDP-10

   The Harvard PDP-10, however, has limited core space.  They will,
   therefore, run the Telnet program only occasionally.

   The following two tables summarize the information on the Host status
   for September 30 - October 8.


   NETWORK  SITE  COMPUTER          DAY, DATE AND TIME (Eastern)
   ADDRESS                   TH    F     M     Tu    W     Th     F
                             9/30  10/1  10/4  10/5  10/6  10/7  10/8
                             1100  1753  1200  1600  1100  1300  1530

    1     UCLA     SIGMA-7     O     T     D      O   #D    O     O
   *65    UCLA     IBM-360/91  O     O     D      O    D    O     O
    2     SRI(NIC) PDP-10      O    #D     T     #T    O    T    #D
    66    SRI(AI)  PDP-10      D     D     D     D     D    D     D
    3     UCSB     IBM-360/75  D     O     O     O     O    O     O
    4     UTAH     PDP-10      D     D     D     D     D    D     D
    69    BBN(TENEX)  PDP-10   T     T     O     O     O    D     D
    6     MIT(Multics)H-645    O     O     D     T     D    T     T
    70    MIT(DM)     PDP-10   D     H     D     T     D    T     T
    8     SDC         IBM-360  D     D     D     D     D    D     D
    9     HARVARD     PDP-10   T     D     T     D     D    T     T
    10    LINCOLN     IBM-360  H     H     H     H     D    T     D

   where

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

      R = Refused (Destination Host returned a CLS to the initial RFC.)

      T = Timed out (Destination Host did not respond in any way to the
      initial RFC, although not dead.)

      H = 1/2  Open (Destination Host opened a connection but then
      either immediately closed it, or did not respond any further.)

      0 = Opened (Destination Host opened a connection and was
      accessible to user.)

      * The UCLA IMB-360/91 currently has Remote Job Service (NETRJS),
        but has not implemented a full server Telnet System.  The BBN
        Terminal IMP is not equipped to test NETRJS however, we are
        assuming that receipt of the UCLA explanatory message indicates
        that NETRJS is also functioning.

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

   NETWORK  SITE   COMPUTER     STATUS or        "STATUS or PREDICTIONS"
   ADDRESS                      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      November          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
     6      MIT(Multics)H-645    Server            Mike Padliosky
     70     MIT(DM)  PDP-10      Server            Bob Bressler
     7      RAND     IBM 360/65  User only         Eric Harslem
     71     RAND     PDP-10      January           Eric Harslem
     8      SDC      IBM-360/67  "Soon"            Bob Long
     9      HARVARD  PDP-10      Server            Bob Sundberg
     73     HARVARD  PDP-1       User only         Bob Sundberg
     10     LINCOLN  IBM-360     "Soon"            Joel Winnet
     74     LINCOLN  TX2         Uncertain         Tom Barkalow
     11     STANFORD PDP-10      November          Andy Moorer
     12     ILLINOIS PDP-11      User only         John Cravits
     13     CASE     PDP-10      December 15       Charles Rose
     14     CARNEGIE PDP-10      January           Hal VanZoeren
     15     PAOLI    B6500       Uncertain         John Cravits
     16     AMES     TIP         User only
     17     MITRE    TIP         User only
     18     BBN(TIP) Prototype TIP   User only


          [This RFC was put into machine readable form for entry]
     [into the online RFC archives by Kelly Tardif, Via Genie 10/1999]