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RFC 0293

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:

       Network
       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 NETWORK PREDICTION" ADDRESS SITE COMPUTER STATUS OR PREDICTION OBTAINED FROM ------- ---- -------- -------------------- ------------- 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]

NET ADDR SITE COMPUTER DATE AND TIME (EASTERN) ---- ---- -------- ----------------------- 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]

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