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Network Working Group                                      E. WentheimerRequest for Comments: 252                       Bolt, Beranek and NewmanCategory: F, G.3                                          8 October 1971NIC: 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     DWnetheimer                                                      [Page 1]

RFC 252                                                     October 1971   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.Wnetheimer                                                      [Page 2]

RFC 252                                                     October 1971   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]Wnetheimer                                                      [Page 3]