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