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Network Working Group Request for Comments: #287 NIC: #8273 Categories: F, G.3 Updates: RFC #267 Obsoletes: None Status of Network Hosts This RFC reports December 6 to December prototype Terminal IMP of the two weeks from no Host status reports

Ellen Westheimer BBN 22 December 1971

on the status of most Network Hosts from 18. Due to hardware debugging, the BBN (Network Address 158) was unavailable for most November 22 to December 6. There was, therefore, for that period.

Several Hosts are currently excluded from the daily testing. These Hosts fall into two categories: 1) Hosts which are the Network as other sites) on weeks. Included Network Address ------133 71 13 15 16 not expected to be functioning on servers (available for use from a regular basis for at least two here are:

Site ---BBN Rand Case Ames/(Paoli) Ames

Computer -------PDP-10 (B) PDP-10 PDP-10 ILLIAC/(B6500) IBM-360/67

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:

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Network Address ------7 73 12 19

Site ---Rand Harvard Illinois NBS

Computer -------IBM-360/65 PDP-1 PDP-11 PDP-11

The NBS Terminal IMP (Network Address 147) was installed in Washington at the beginning of December. 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.

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NETWORK ADDRESS SITE ------- ----

COMPUTER --------

DAY, DATE AND TIME (EASTERN) ---------------------------M Tu W Th F 12/6 12/7 12/8 12/9 12/10 1300 1700 1300 1300 1630 D H D D O T D O O #D D D D D D O H T D D D D O O #D T D D D D O D D D O D D O D #D D D D D O H H D D R D D T D #D O D D D D T H D D D T T O O #D D H D D D

1 *65 2 66 3 4 69 6 70 8 9 10 74 11 14

UCLA UCLA SRI (NIC) SRI (AI) UCSB UTAH BBN

SIGMA-7 IBM-360/91 PDP-10 PDP-10 IBM-360/75 PDP-10 PDP-10

MIT (Multics) H-645 MIT (DM) SDC HARVARD LINCOLN LAB LINCOLN LAB STANFORD CARNAGIE PDP-10 IBM-360/67 PDP-10 IBM-360/67 TX2 PDP-10 PDP-10

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.)

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NETWORK ADDRESS SITE ------- ----

COMPUTER --------

DAY, DATE AND TIME (EASTERN) ---------------------------M Tu W Th F 12/13 12/14 12/15 12/16 12/17 1300 1700 1700 1600 1400 1000 1400 1400 1300 1100 D O D D T D T O D #D O H D D D #D #D D D O D H H O #D D D D D D D D D D D D H O D #D O H D D D O O T D O D O D O #D D H H D D O O O D D D T D O #D T H D D D

1 *65 2 66 3 4 69 6 70 8 9 10 74 11 14

UCLA UCLA SRI (NIC) SRI (AI) UCSB UTAH BBN

SIGMA-7 IBM-360/91 PDP-10 PDP-10 IBM-360/75 PDP-10 PDP-10

MIT (Multics) H-645 MIT (DM) SDC HARVARD LINCOLN LAB LINCOLN LAB STANFORD CARNAGIE PDP-10 IBM-360/67 PDP-10 IBM-360/67 TX2 PDP-10 PDP-10

*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 NETJRS. We are assuming that initial connection to the NETRJS logger indicates that NETJRS is also functioning. # These sites advertise that they may not have their systems available at these times.

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NETWORK ADDRESS SITE ------- ---1 65 2 66 3 4 *5 69 *133 6 70 *7 *71 8 9 *73 10 74 11 *12 *13 14 *15 *16 *144 *145 *19 *147 *158 UCLA UCLA SRI (NIC) SRI (AI) UCSB UTAH BBN (NCC) BBN (TENEX) BBN (TENEX-B) MIT (Multics) MIT (DM) RAND RAND SDC HARVARD HARVARD LINCOLN LINCOLN STANFORD ILLINOIS CASE CARNEGIE AMES/(PAOLI) AMES AMES MITRE NBS NBS BBN

COMPUTER -------SIGMA-7 IBM-360/91 PDP-10 PDP-10 IBM-360/75 PDP-10 DDP-516 PDP-10 PDP-10 H-645 PDP-10 IBM-360/65 PDP-10 IBM-360/67 PDP-10 PDP-1 IBM-360/67 TX2 PDP-10 PDP-11 PDP-10 PDP-10 ILLIAC/ (B6500) IBM-360/67 TIP TIP PDP-11 TIP TIP (Prototype)

STATUS OR PREDICTION -------------------Server Remote Job Service now, Telnet in April Server "Soon" Server "Soon" Never Server Server (Experimental) Server Server User only January '72 Server Server User only "Soon" "Soon" "Soon" User Only March '72 January '72 September '62 Januray '72 User only User only User only User only User only

"STATUS OR PREDICTIONS" OBTAINED FROM ------------Jon Postel Bob Braden John Melvin Len Chaiten Jim White Barry Wessler Alex McKenzie Dan Murphy Dan Murphy Mike Padlipsky Bob Bressler Eric Harslem Eric Harslem Bob Long Bob Sundberg Bob Sundberg Joel Winnet Tom Barkalow Andy Moorer John Cravits Charles Rose Hal VanZoeren John McConnel Wayne Hathaway

Robert Rosenthal

*Host not included in daily testing. [ This RFC was put into machine readable form for entry ] [ into the online RFC archives by Daniel Lang 4/97]

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