Request for Comments: 344
Categories: F, G.3
Updates: RFC #342
22 May 1972
NETWORK HOST STATUS
This RFC reports on the status of most Network Hosts from
May 8 to May 19. No testing was done on May 15 due to the attempt to install the new IMP system on that day.
During this interval the PDP-10 of the MIT Artificial Intelligence Group (Network address 134) and the PDP-10 at Stanford (Network address 11) each became Network Servers.
Several Hosts are currently excluded from the daily testing. These Hosts fall into two categories:
- 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. The only Host in this category is the PDP-10 at Case (Network address 13).
- Hosts which are currently intended to be users only. Included here are the Terminal IMPs, which are presently in the Network (AMES, MITRE, NBS, ETAC, USC, GWC, 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 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.
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
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 with 60 seconds.)
[This RFC was put into machine readable form for entry] [into the online RFC archives by BBN Corp. Alex McKenzie 12/96]