RFC235

Network Working Group E. Westheimer Request for Comments: 235 BBN NIC: 7652 September 27, 1971 Obsoletes: None Updates: None

                          SITE STATUS

Beginning with this RFC, BBN will report on the status of most Network Hosts approximately once every two weeks. The information for these reports will be gained from talking to people at each site, and from experimental "data". These data will be the results of daily attempts to log into each of the Hosts which might be accessible to a Network user; the attempts will have been made from the BBN prototype Terminal IMP at a random time each weekday.

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) for at least a
  month.  Included here are:

        Network             Site              Computer
        Address

         71                 Rand              PDP-10
         74                 Lincoln           TX2
         11                 Stanford          PDP-10
         13                 Case              PDP-10
         14                 Carnegie          PDP-10
         15                 Paoli             B6500

  2)  Hosts which are currently intended to be users only.  Included
  here are the Terminal IMPs presently in the Network (AMES, MITRE,
  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              Site               Computer
        Address

           7                 Rand               IBM-360
          73                 Harvard            PDP-1
          12                 Illinois           PDP-11

The tables on the next two pages condense the information on Host status for September 13 through September 24.

________________

• 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.

WE/jm

NETWORK SITE COMPUTER STATUS OR PREDICTION CONTRACT ADDRESS

1 UCLA SIGMA-7 Server John Postel 65 UCLA IBM-360 Remote Job Service now,

                             Time-sharing in January  Steve Wolf

2 SRI(NIC) PDP-10 October11 John Melvin 66 SRI(AI) PDP-10 November Len Chaiten 3 UCSB IBM-360 Server Jim White 4 UTAH PDP-10 soon Barry Wessler 5 BBN DDP-516 NCC Alex McKenzie 69 BBN PDP-10 Server Dan Murphy 6 MIT(Multics) H-465 Soon Mike Padlipsky 70 MIT(DM) PDP-10 Server Bob Bressler 7 RAND IBM-360 User only Eric Harslem 71 RAND PDP-10 January Eric Harslem 8 SDC IBM-360 October 11 Bob Long 9 HARVARD PDP-10 Soon Bob Sundberg 73 HARVARD PDP-1 User only Bob Sundberg 10 LINCOLN IBM-360 Soon Joel Winnet 74 LINCOLN TX2 Uncertain Tom Barklow 11 STANFORD PDP-10 November Andy Moorer 12 ILLINOIS PDP-11 User only John Cravits 13 CASE PDP-10 December 15 Charles Rose 14 CARNEGIE PDP-10 January Hal Van Zoeren 15 PAOLI B6500 Uncertain John Cravits 16 AMES DDP-316 Terminal IMP Does not apply 17 MITRE DDP-316 Terminal IMP Does not apply 30 BBN DDP-316 Terminal IMP(Prototype) Does not apply

NETWORK SITE COMPUTER DATE AND TIME (P.M.) ADDRESS 9/13 9/14 9/15 9/16 9/17

                              4:30  3:30  6:00  10:30  1:30

1 UCLA SIGMA 7 0 0 0 D D

• 65 UCLA PDP-10 0 0 0 0 0

2 SRI(NIC) PDP-10 D D D D D 66 SRI(AI) PDP-10 D D D D D 3 UCSB IBM-360 0 0 0 0 0 4 UTAH PDP-10 D D D D D 69 BBN PDP-10 0 1/2 0 0 T 1/2 0 6 MIT(Multics) DDP-645 R R R D 1/2 0 70 MIT(DM) PDP-10 T T T O 0 8 SDC IBM-360 D D D D T 9 HARVARD PDP-10 T D T T T 10 LINCOLN IBM-360 D 1/2 0 1/2 0 D T

NETWORK SITE COMPUTER DATE AND TIME (P.M.) ADDRESS 9/20 9/21 9/22 9/23 9/24

                              12:30  4:30  3:30  2:00  5:00

1 UCLA SIGMA 7 D 0 D T 0

• 65 UCLA PDP-10 D 0 0 0 0

2 SRI(NIC) PDP-10 D D 0 D D 66 SRI(AI) PDP-10 D D D D D 3 UCSB IBM-360 0 0 0 0 0 4 UTAH PDP-10 D D D D D 69 BBN PDP-10 0 1/2 0 0 1/2 0 0 6 MIT(Multics) DDP-645 D 1/2 0 T T R 70 MIT(DM) PDP-10 T 1/2 0 0 D TD 8 SDC IBM-360 D D D D D 9 HARVARD PDP-10 T D T D D 10 LINCOLN IBM-360 D D D 1/2 0 D

where

  D = Dead. (Destination Host either dead or inaccessible (due to
  network partitioning or local IMP failure from the BBN Terminal
  IMP)

  R = Refused. (Destination Host returned a CLS to the initial RFC.)

  T = Timed out. (Destination Host did not responding any way to the
  initial RFC, although not dead.)

  1/2 0 = 1/2 Open. (Destination Host opened a connection but then
  either immediately closed it, or did not respond any further.)

  0 = Open. (Destination Host opened a connection and was accessible
  to users.

  * The UCLA IBM-360 is at the moment only able to handle Remote Job
  Service.  BBN is not equipped to test this, but is assuming that
  receipt of their canned message indicates that RJS is also
  functioning.

    [This RFC was put into machine readable form for entry]
 [into the online RFC archives by Kelly Tardif, Viagénie 10/99]