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This is a modified version of the Internet RFC suitable for machine-translating. Original version is available here: RFC287

Obsoleted by: 288

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:

   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:

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   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

---------------- * 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. ADDRESS SITE COMPUTER DAY, DATE AND TIME (EASTERN) ------- ---- -------- ----------------------------

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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


  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
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.)

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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


  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. NETWORK PREDICTIONS" ADDRESS SITE COMPUTER STATUS OR PREDICTION OBTAINED FROM ------- ---- -------- -------------------- -------------

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                                                         "STATUS OR

   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
                       (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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