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Network Working Group Request for Comments: 252 Category: F, G.3 NIC: 7696

E. Wentheimer Bolt, Beranek and Newman 8 October 1971

The purpose of this RFC is to report on the recent status of Network Hosts. During September 27 through September 29 the prototype Terminal IMP (Network Address 158) was inaccessible hardware debugging. The Network was, therefore, not examined these days.

most BBN due to on

Three Hosts which were not officially able to act as Server's at the time of RFC #240 are now able to do so. These Hosts are: NETWORK ADDRESS 2 6 9 SITE SRI (NIC) MIT (Multics) HARVARD COMPUTER PDF-10 H-645 PDP-10 They will,

The Harvard PDP-10, however, has limited core space. therefore, run the Telnet program only occasionally.

The following two tables summarize the information on the Host status for September 30 - October 8.

NETWORK ADDRESS

SITE

COMPUTER TH 9/30 1100

DAY, F 10/1 1753 T O #D D O D T O H D D H

DATE AND TIME (Eastern) M Tu W Th F 10/4 10/5 10/6 10/7 10/8 1200 1600 1100 1300 1530 D D T D O D O D D D T H O O #T D O D O T T D D H #D D O D O D O D D D D D O O T D O D D T T D T T O O #D D O D D T T D T D

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

UCLA SIGMA-7 UCLA IBM-360/91 SRI(NIC) PDP-10 SRI(AI) PDP-10 UCSB IBM-360/75 UTAH PDP-10 BBN(TENEX) PDP-10 MIT(Multics)H-645 MIT(DM) PDP-10 SDC IBM-360 HARVARD PDP-10 LINCOLN IBM-360

O O O D D D T O D D T H

Wnetheimer

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RFC 252

October 1971

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 respond in any way to the initial RFC, although not dead.) H = 1/2 Open (Destination Host opened a connection but then either immediately closed it, or did not respond any further.) 0 = Opened (Destination Host opened a connection and was accessible to user.) * The UCLA IMB-360/91 currently has Remote Job Service but has not implemented a full server Telnet System. Terminal IMP is not equipped to test NETRJS however, assuming that receipt of the UCLA explanatory message that NETRJS is also functioning. (NETRJS), The BBN we are indicates

# These sites advertise that they may not have their system available # at these times.

Wnetheimer

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RFC 252

October 1971

NETWORK ADDRESS 1 65

SITE

COMPUTER

STATUS or PREDICTION Server Remote Job Service now, Telnet in April Server November Server "Soon" Never Server Server Server User only January "Soon" Server User only "Soon" Uncertain November User only December 15 January Uncertain User only User only TIP User only

"STATUS or PREDICTIONS" OBTAINED FROM Jon Postel

UCLA UCLA

SIGMA-7 IBM-360/91

2 66 3 4 5 69 6 70 7 71 8 9 73 10 74 11 12 13 14 15 16 17 18

SRI(NIC) PDP-10 SRI(AI) PDP-10 UCSB IBM-360/75 UTAH PDP-10 BBN(NCC) DDP-516 BBN(TENEX) PDP-10 MIT(Multics)H-645 MIT(DM) PDP-10 RAND IBM 360/65 RAND PDP-10 SDC IBM-360/67 HARVARD PDP-10 HARVARD PDP-1 LINCOLN IBM-360 LINCOLN TX2 STANFORD PDP-10 ILLINOIS PDP-11 CASE PDP-10 CARNEGIE PDP-10 PAOLI B6500 AMES TIP MITRE TIP BBN(TIP) Prototype

Bob Braden John Melvin Len Chaiten Jim White Barry Wessler Alex McKenzie Dan Murphy Mike Padliosky 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 Cravits

[This RFC was put into machine readable form for entry] [into the online RFC archives by Kelly Tardif, Via Genie 10/1999]

Wnetheimer

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