NETWORK HOST STATUS

This RFC reports on the status of most Network Hosts from March 27 to

April 7. During this interval the PDP-10 at Ames which acts as a

front-end to the Illiac (Network address 15) became a server.

However, this Host will not be available to general use for several

months. Also a Terminal IMP was installed at the University of

Southern California (Network Address 23) on March 29.

Several Hosts are currently excluded from the daily testing. These

Host 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:

Network

         Address              Site                Computer
         -------              ----                --------
           134               MIT-AI               PDP-10
            13               Case                 PDP-10

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, 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

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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SITE

 NO.   SITE                         DATE AND TIME (EASTERN)
----   ----                         -----------------------
                    3/27  3/28  3/29  3/30  3/31  4/3   4/4   4/5   4/6   4/7
                    1430  1400  1600  1500  1300  1700  1200  1730  1630  1330
  1    UCLA-NMC       O     H     O     O     O     O    #D     O     O     O
 65    UCLA-CCN       O     O     O     O     O     O     D     O     O     O
  2    SRI-ARC        O     D     D     O     O     O     O     O     O     O
 66    SRI-AI         O     D    #D     D     D     D     O     D     D     D
  3    UCSB-MOD75     O     O     O     O     O     O     O     O     T     O
  4    UTAH-10        O     O     O     O     O     O     O     D     O     O
 69    BBN-TENEX      O     O     O     O     O     O     O     O     O     O
133    BBN-TENEXB    #D    #D    #D    #D    #D    #T    #T    #D    #D    #T
  6    MIT-Multics    D     H     T     D     D     O     D     O     O     O
 70    MIT-DMCG       O     O     O     O     O     H     T     T     T     O
 71    RAND-CSG       O     D     O     O     O     O     O     O     O     O
  8    SDC-ADEPT     #D    #D    #D    #D    #D     D    #D     D    #D    #D
  9    HARVARD-10     D     D     O     O     O     O    #D     O     O     O
 10    L.L.-360       T     H     H     H     H     D     H     H     H     H
 74    L.L.-TX-2      O     O     O     D     O     O     O    #D     O     O
 11    STANFORD-AI    D     D     D     D     D     D     D     D     D     D
 14    CMU-10         H     H     D     D     D     D     D     H     H     H
 15    AMES-Illiac    D     D     D     H     O     H     D     H     D     O
 16    AMES-67        D     D     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.)

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 2]

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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 April
   2     SRI(NIC)     PDP-10         Server                   John Melvin
  66     SRI(AI)      PDP-10         Server                   Len Chaiten
   3     UCSB         IBM-360/75     Server                   Jim White
   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         User Now                 Jeff Rubin
  *7     RAND         IBM-360/65     User Only                Eric Harslem
  71     RAND         PDP-10         Server                   Eric Harslem
  *8     SDC          IBM-360/155    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         "Soon"                   Andy Moorer
 *12     ILLINOIS     PDP-11         User Only                John Cravits
 *13     CASE         PDP-10         June                     Charles Rose
  14     CARNEGIE     PDP-10         "Soon"                   Hal VanZoeren
 *15     AMES         ILLIAC         Server                   John McConnell
                      (B6500)
  16     AMES         IBM-360/67     "Soon"                   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
*148     ETAC         TIP            User Only
 *23     USC          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.

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

       [ into the online RFC archives by BBN Corp. under the   ]
       [ direction of Alex McKenzie.                   12/96   ]

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