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Network Host Status (RFC0330) Disclosure Number: IPCOM000003524D
Original Publication Date: 1972-Apr-01
Included in the Prior Art Database: 2019-Feb-12
Document File: 3 page(s) / 4K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

E. Westheimer: AUTHOR

Related Documents

10.17487/RFC0330: DOI

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 57% of the total text.

Network Working Group Ellen Westheimer NIC #9923 BBN RFC #330 13 April 1972 Categories: F, G.3 Updates: RFC #326 Obsoletes: None


This RFC reports on the status of most Network Hosts from March 27 to April 7. During this interval the PDP-10 at Ames which acts as a front-end to the Illiac (Network address 15) became a server. However, this Host will not be available to general use for several months. Also a Terminal IMP was installed at the University of Southern California (Network Address 23) on March 29.

Several Hosts are currently excluded from the daily testing. These Host 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 ------- ---- -------- 134 MIT-AI PDP-10 13 Case PDP-10

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, ETAC, USC, 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. _______________ *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.

[Page 1]

SITE NO. SITE DATE AND TIME (EASTERN) ---- ---- ----------------------- 3/27 3/28 3/29 3/30 3/31 4/3 4/4 4/5 4/6 4/7 1430 1400 1600 1500 1300 1700 1200 1730 1630 1330 1 UCLA-NMC O H O O O O #D O O O 65 UCLA-CCN O O O O O O D O O O 2 SRI-ARC O D D O O O O O O O 66 SRI-AI O D #D D D D O D D D 3 UCSB-MOD75 O O O O O O O O T O 4 UTAH-10 O O O O O O O D O O 69 BBN-TENEX O O O O O O O O O O 133 BBN-TENEXB #D #D #D #D #D #T #T #D #D #T 6 MIT-Multics D H T D D O D O O O 70 MIT-DMCG O O O O O H T T T O 71 RAND-CSG O D O O O O O O O O 8 SDC-ADEPT #D #D #D #D #D D #D D #D #D 9 HARVARD-10 D D O O O O #D O O O 10 L.L.-360 T H H H H D H H H H 74 L.L.-TX-2 O O O D O O O #D O O 11 STANFORD-AI D D D D D D D D D D 14 CMU-10 H H D D D D D H H H 15 AMES-Illiac D D D H O H D H D O 16 AMES-67 D D D D D D D D D D

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 ser...