NETWORK HOST STATUS

This RFC reports on the status of most Network Hosts from July 17

to July 28.

On Tuesday, July 18, the new IMP software was released.

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.

______________

*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                       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

[Page 2]

---

*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 3]

---

NO. SITE DATE AND TIME (EASTERN)

---  ----
                  7/17  7/18  7/19  7/20  7/21  7/24  7/25  7/26  7/27  7/28
                  1600  1300  1600  1400  1530  1730  1500  1230  1630  1300
  1  UCLA-NMC       O     H     H     O     D     O     O     O     O     O
 65  UCLA-CCN*      O     O     O     O     O     O     O     O     O     O
  2  SRI-ARC        O     O     O     O     D     O     O     T     O     O
 66  SRI-AI         D     D     D     D     D     O     O     D     D     D
  3  UCSB-MOD75     O     O     O     O     O     O     O     O     D     D
  4  UTAH-10        O     O     O     O     O     T     D     T     D     D
 69  BBN-TENEX      O     O     D     D     O     O     O     O     O     T
133  BBN-TENEXB    #D    #D    #D    #D    #D    #D    #D    #D    #D    #D
  6  MIT-MULTICS    O     O     O     D     O     O     H     R     O     O
 70  MIT-DMCG       O     T     H     F     O     T     O     O     O     O
134  MIT-AI         O     O     O     O     O     O     O     O     O     O
194  MIT-ML         O     O     O     O     O     O     D     O     O     O
 71  RAND-CSG       O     D     O     D     D     O     D     O     O     O
  8  SDC-ADEPT     #D    #D    #D    #D    #D     D    #D    #D    #D    #D
  9  HARVARD-10     O     O     O     O     O     O     O     O     O     O
 10  L.L.-350       H     H     R     D     D     D     D     T     D     H
 74  L.L.-TX-2      O     O     O     D     D    #D     D    #D    #D     O
 11  STANFORD-AI    H     D     D     D     H     H     D     H     H     H
 13  CASE           D     D     D     D     D     D     D     D     D     D
 14  CMU-10         O     O     O     D     O     T     D     D     D     D
 15  AMES-ILLIAC    D     T     O     D     D     O     O     O     D     O
 16  AMES-67        D     D     D     H     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.)

_______________

[Page 4]

---

*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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