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Network Working Group Ellen Westheimer RFC #293 BBN NIC #8303 18 January 1972 Categories: F, G.3 Updates: RFC 288 Obsoletes: None

                        NETWORK HOST STATUS
   This RFC reports on the status of most Network Hosts from January

3 to January 15.

   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)
         8*                 SDC             IBM-370/155
        13                  Case            PDP-10
        15                  Ames/(Paoli)    ILLIAC-(B6500)

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: 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. __ [Page 1] *The SDC site is currently replacing their IBM 360/67 by an IBM 370/155. This site therefore is temporarily without any permanent Host on the network, and for this reason was not included in the daily testing for the preceding two weeks. 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.

< In the original, the tables on this and the following page were typed > < in "landscape" format. For this online version the tables are > < compressed horizontally to fit on a "portrait"-oriented page >

                                                            "STATUS OR


 1     UCLA          SIGMA-7       Server                   Jon Postel
65     UCLA          IBM-360/91    Remote Job Service now,  Bob Braden
                                    Telnet in April
 2     SRI(NIC)      PDP-10        Server                   John Melvin
66     SRI(AI)       PDP-10        "Soon"                   Len Chaiten
 3     UCSB          IBM-360/75    Server                   Jim White
*5     BBN(NCC)      DDP-516       Never                    Barry Wessler
69     BBN(TENEX-A)  PDP-10        Server                   Alex McKenzie

*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
*7     RAND          IBM-360/65    User Only                Eric Harslem
71     RAND          PDP-10        "Soon"                   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 Winett
74     LINCOLN       TX2           Server                   Will Kantrowitz
11     STANFORD      PDP-10        "Soon"                   Andy Moorer

*12 ILLINOIS PDP-11 User Only John Cravits *13 CASE PDP-10 March Charles Rose

14     CARNEGIE      PDP-10        "Soon"                   Hal VanZoeren

*15 AMES/(PAOLI) ILLIAC/(B6500) September John McConnell

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 *158 BBN TIP(Prototype) User Only

* Host not included in daily testing

                                                              [Page 2]


                        1/3  1/4  1/5  1/6  1/7  1/10 1/11 1/12 1/14 1/15
                        1700 1330 1200 1800 0900 1730 1030 1030 1800 1000

1 UCLA(NMC) SIGMA-7 O O #D O O O O #D O O 65 UCLA(CCN) IBM-360/91 O O O D #D O O O O D 2 SRI(NIC) PDP-10 O #D O O D O O O T O 66 SRI(AI) PDP-10 D D D D D D D D D D 3 UCSB IBM-360/75 D D #D O O D D #D D D 4 UTAH PDP-10 D D #D O O D D #D D D 69 BBN(10X-A)PDP-10 O O H O O O O O D T 6 MIT(Multics)H-645 O D D D O O O D T O 70 MIT(DM) PDP-10 O O O T O O D D O T 71 RAND PDP-10 T D D T D D D D D D 9 HARVARD PDP-10 #T #D O #D D #D O T #D O 10 LL IBM-360/67 D T H D D D H D D H 74 LL TX-2 H H #D T D O H #D O O 11 STANFORD PDP-10 D D D D D D D D D D 14 CARNEGIE PDP-10 D T D D D D D D D H 16 AMES IBM-360/67 D D D D D D D D D H

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.

     [ 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   ]
                                                              [Page 3]
      [Page 4]
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