NETWORK HOST STATUS

This RFC reports on the status of most Network Hosts from June 5

to June 16. During this period the MIT Math Lab PDP-10 (Network

address 198) became a server.

No testing was done on June 6 due to an attempt to install the

new IMP system. No testing was done on June 9 as the prototype

Terminal IMP was being used for software debugging.

On June 16 the ARPA Terminal IMP (Network 156) was installed in

Arlington, Virginia.

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. The only Host in this category is the PDP-10 at Case

(Network address 13).

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, ETAC, USC, GWC, NOAA, RADC, SAAC, BELVOIR, ARPA, 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

          Address                Site                Computer
          -------                ----                --------
              7                 Rand                 IBM-360/65
             73                 Harvard              PDP-1
             12                 Illinois             PDP-11
             19                 NBS                  PDP-11
             23                 USC                  IBM-360/44

The tables on the next two pages summarize the Host status

for this period.

________________

*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.

[Page 1]

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STATUS OR

 SITE                                                       PREDICTIONS
ADDRESS   SITE           COMPUTER    STATUS OR PREDICTION   OBTAINED FROM
-------   ----           --------    --------------------   -------------
   1      UCLA           SIGMA-7     Server #Limited         Jon Postel
  65      UCLA           IBM-360/91  NETRJS now              Bob Braden
                                     (Telnet in June)
   2      SRI (NIC)      PDP-10      Server                  Jim White
  66      SRI (AI)       PDP-10      Server                  Len Chaiten
   3      UCSB           IBM-360/75  Server                  Ron Stoughton
   4      UTAH           PDP-10      Server                  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
 134      MIT (AI)       PDP-10      Server                  Jeff Rubin
 198      MIT (ML)       PDP-10      Server                  Jeff Rubin
  *7      RAND           IBM-360/65  User Only               Eric Harslem
  71      RAND           PDP-10      Server                  Eric Harslem
   8      SDC            IBM-370/155 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 Winett
  74      LINCOLN        TX-2        Server                  Will Kantrowitz
  11      STANFORD       PDP-10      Server                  Andy Moorer
 *12      ILLINOIS       PDP-11      User Only               John Cravits
 *13      CASE           PDP-10      June                    Charles Rose
  14      CARNEGIE       PDP-10      Server                  Hal VanZoeren
  15      AMES           ILLIAC      Server                  John McConnell
                         (PDP-10)
  16      AMES           IBM-360/67  "Soon"                  Wayne Hathaway
*144      AMES           TIP         User Only
*145      MITRE          TIP         User Only
*146      RADC           TIP         User Only
 *19      NBS            PDP-11      User Only              Robert Rosenthal
*147      NBS            TIP         User Only
*148      ETAC           TIP         User Only
 *23      USC            IBM-360/44  User Now               James Pepin
*151      USC            TIP         User Only
*152      GWC            TIP         User Only
*153      NOAA           TIP         User Only
*154      SAAC           TIP         User Only
*156      ARPA           TIP         User Only
*158      BBN            TIP         User Only
                         (Prototype)

______________

*Host not included in daily testing.

#The NMC is a research site and would like to have prior arrangement

with each user.

[Page 2]

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NO. SITE DATE AND TIME (EASTERN)

---     ----                          -----------------------
                         6/5   6/7   6/8   6/12  6/13  6/14  6/15  6/16
                         1330  1600  1200  1530  1230  1100  1230  1700

  1     UCLA-NMC           O     O     O     O     O    #D     O     O
 65     UCLA-CCN*          O     O     O     O     O    #D     O     O
  2     SRI-ARC            O     D     D     O     O     O     O     O
 66     SRI-AI             O     D     T     D     D     D    #D     D
  3     UCSB-MOD75         O     O     O     O     O     O     O     O
  4     UTAH-10            0     O     O     D     D     O     D     O
 69     BBN-TENEX          D     O     O     O     O     O     O     O
133     BBN-TENEXB        #D    #D    #D    #D    #D    #D    #D    #D
  6     MIT-MULTICS        O     O     O     O     O     O     O     O
 70     MIT-DMCG           O     O     O     O     O     O     O     O
134     MIT-AI             H     H     H     H     H     H     H     H
194     MIT-ML             D     D     H     D     H     H     D     H
 71     RAND-CSG           O     D     O     D     O     O     O     O
  8     SDC-ADEPT         #D    #D    #D    #D    #D    #D    #D     D
  9     HARVARD-10         O     O     O     O    #D    #D    #D     O
 10     L.L.-360           H     D     H     D     H     H     H     H
 74     L.L.-TX-2          R    #D     O     O     O    #D     O     O
 11     STANFORD-AI        D     D     O     O     O     O     D     D
 14     CMU-10             D     O     O     O     O     T     O     O
 15     AMES-ILLIAC        T     O     O     O     D     O     O     O
 16     AMES-67            D     D     D     D     D     D     D     D

where

D = Dead (Destination Host either dead or inaccessible [due to network

partitioning or local IMP failure] from the BBN Terminal IMP.)

F = Full (Destination Host opened a connection, informed user that all

Network ports were in use, and immediately closed the connection.)

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 seconds.)

_______________

*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 indicates that NETRJS is also functioning.

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

[Page 3]

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

       [ into the online RFC archives by BBN Corp. under the   ]
       [ direction of Alex McKenzie.                      1/97 ]

[Page 4]

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