NETWORK HOST STATUS

This RFC reports on the status of most Network Hosts from

July 31 to August 4.

Several Hosts are currently excluded from the daily testing

as they are presently intended to be users only. Included here

are the Terminal IMPs, which are presently in the Network (AMES,

MITRE, RADC, NBS, ETAC, USC, GWC, NOAA, SAAC, 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
       138                    Lincoln              TSP
        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.

NOTE: Ellen Westheimer left BBN to return to school on August 4.

We therefore will discontinue the publication of these summaries.

It is my understanding that UCLA-NMC is considering the publica-

tion of similar, although more detailed, survey data in the near

future; I hope that data will serve in lieu of these reports. In

addition, of course, MIT-DMCG has had survey information available

on line for some time (see RFC #308, NIC 9259.)

                                                 - Alex McKenzie -

_______________

*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]

---

STATUS OR PREDICTIONS

ADDRESS SITE COMPUTER STATUS OR PREDICTION OBTAINED FROM

-------  ----           --------      --------------------   -------------
   1     UCLA           SIGMA-7       Sever #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
*138     LINCOLN        TSP           User Only              Tom Barkelow
  11     STANFORD       PDP-10        Server                 Andy Moorer
  12     ILLINOIS       PDP-11        User Only              John Cravits
  13     CASE           PDP-10        July                   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

[Page 2]

---

*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 a prior arrangement with each user.

[Page 3]

---

NO. SITE DATE AND TIME (EASTERN)

---    ----                            -----------------------
                                  7/31    8/1     8/2     8/3     8/4
                                  1400    1830    1330    1500    1330
  1    UCLA-NMC                     H       O       O       O       O
 65    UCLA-CNN*                    O       O       O       O       O
  2    SRI-ARC                      O       O       O       O       O
 66    SRI-AI                       D       D       O       T       O
  3    UCSB-MOD75                   O       O       O       O       O
  4    UTAH-10                      O       O       O       O       O
 69    BBN-TENEX                    O       T       T       O       R
133    BBN-TENEXB                  #D      #T      #T      #T      #D
  6    MIT-MULTICS                  O       T       O       O       O
 70    MIT-DMCG                     O       H       O       O       O
134    MIT-AI                       O       H       O       O       O
194    MIT-ML                       O       H       T       O       O
 71    RAND-CSG                     D       O       O       O       O
  8    SDC-ADEPT                   #D       D      #D      #D      #D
  9    HARVARD-10                   O       O       O       D       O
 10    L.L.-360                     H       T       H       H       R
 74    L.L.-TX-2                    O       O       O       R       O
 11    STANFORD-AI                  H       H       H       H       T
 13    CASE                         D       D       D       D       D
 14    CMU-10                       O       O       O       D       O
 15    AMES-ILLIAC                  D       T       D       D       D
 16    AMES-67                      D       H       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.)

[Page 4]

---

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.

[ 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 5]

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