Network Working Group
RFC #267
NIC #7815
Categories: F, G.3
Updates: RFC #266
Obsoletes None
This RFC reports on the status of most Network Hosts from November
8 to November 19. On November 18, however, the BBN prototype Terminal
IMP (Network Address 158) was inaccessible due to hardware debugging.
Ellen Westheimer
22 November 1971

Several Hosts are currently excluded fron 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) for at least two weeks. Included here are:
          Address        Site             Computer
            71           Rand             PDP-10
            74           Lincoln          TX2
            13           Case             PDP-10
            14           Carnegie         PDP-10
            15           Ames             B6500
            16           Ames             IBM-360/67
  1. Hosts which are curently intended to be users only. Included here are the Terminal IMPs, which are presently in the Network (AMES, MITRE, 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:
          Address        Site             Computer
             7           Rand             IBM-360/65
            73           Harvard          PDP-1
            12           Illinois         PDP-11

During these two weeks the Lincoln Labs TX2 Hosts became a Network

User. The SDC IBM 360/67 is now a server.

* 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.

NETWORK                            STATUS or            STATUS or
                                                        OBTAINED FROM

   1       UCLA        SIGMA-7     Server               Jon Postel
   5       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
   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
  20       LINCOLN     IBM-360/67  "Soon"               Joel Winnet
 *74       LINCOLN     TX2         December             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        B6500       September '72        John McConnel
 *16       AMES        IBM-360/67  January '72          Wayne Hathaway
*144       AMES        TIP         User only
*145       MITRE       TIP         User only
*158       BBN         TIP         User only

* host not included in daily testing.

                                   M      Tu       W       Th      F
                                 11/8    11/9    11/10   11/11   11/12

  1     UCLA         SIGMA-7       O       D       O       O       O
*65     UCLA         IBM-360/91    O       D       O       D       O
  2     SRI (NIC)    PDP-10        O       O       O       O       T
 66     SRI (AI)     PDP-10        D       D       D       D       D
  3     UCSB         IBM-360/75    O       T       O       O       D
  4     UTAH         PDP-10        D       D       H       D       D
 69     BBN (TENEX)  PDP-10        H       O       O       O       O
  6     MIT (Mulics) H-645         D       D       D       O       O
 70     MIT (DM)     PDP-10        O       H       T       D       O
  8     SDC          IBM-360/67   #D      #D      #D      #D      #D
  9     HARVARD      PDP-10        D       D       D       D       T
 10     LINCOLN      IBM-360/67    H       H       H       H       D
 11     STANFORD     PDP-10        D       T       D       D       D

                                   M       Tu       W       F
                                 11/15   11/16    11/17   11/19

  1     UCLA         SIGMA-7       O       O       O       O
*65     UCLA         IBM-360/91    O       O       D       O
  2     SRI (NIC)    PDP-10        T       T       O       O
 66     SRI (AI)     PDP-10        D       D       D       D
  3     UCSB         IBM-360/75    O       O       O       O
  4     UTAH         PDP-10        D       D       D       D
 69     BBN (TENEX)  PDP-10        O       D       O       O
  6     MIT (Mulics) H-645         T       D       O       H
 70     MIT (DM)     PDP-10        O       O       O       D
  8     SDC          IBM-360/67   #D      #D      #D      #D
  9     HARVARD      PDP-10        T       D       D       T
 10     LINCOLN      IBM-360/67    D       H       D       D
 11     STANFORD     PDP-10        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.)

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 further.)

O = Open (Destination Host opened a connection and was accessible to

  • The UCLA IBM-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.

[ This RFC was put into machine readable form for entry ]

[ into the online RFC archives by Simone Demmel 1/98 ]