Документ взят из кэша поисковой машины. Адрес оригинального документа : http://mirror.msu.net/pub/rfc-editor/rfc-ed-all/pdfrfc/rfc235.txt.pdf Дата изменения: Wed Mar 27 23:27:32 2002 Дата индексирования: Tue Oct 2 16:21:14 2012 Кодировка:

Network Working Group Request for Comments: 235 NIC: 7652 Obsoletes: None Updates: None

E. Westheimer BBN September 27, 1971

SITE STATUS 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. Hosts fall into two categories: These

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 Address 71 74 11 13 14 15 Site Computer

Rand Lincoln Stanford Case Carnegie Paoli

PDP-10 TX2 PDP-10 PDP-10 PDP-10 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:

Westheimer

[Page 1]


RFC 235

Site Status

September 1971

Network Address 7 73 12

Site

Computer

Rand Harvard Illinois

IBM-360 PDP-1 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 is frequently not connected to the Network, but being used to refine and debug the Terminal IMP programs. WE/jm

Westheimer

[Page 2]


RFC 235

Site Status

September 1971

NETWORK ADDRESS 1 65 2 66 3 4 5 69 6 70 7 71 8 9 73 10 74 11 12 13 14 15 16 17 30

SITE

COMPUTER

STATUS OR PREDICTION

CONTRACT

UCLA UCLA SRI(NIC) SRI(AI) UCSB UTAH BBN BBN MIT(Multics) MIT(DM) RAND RAND SDC HARVARD HARVARD LINCOLN LINCOLN STANFORD ILLINOIS CASE CARNEGIE PAOLI AMES MITRE BBN

SIGMA-7 IBM-360 PDP-10 PDP-10 IBM-360 PDP-10 DDP-516 PDP-10 H-465 PDP-10 IBM-360 PDP-10 IBM-360 PDP-10 PDP-1 IBM-360 TX2 PDP-10 PDP-11 PDP-10 PDP-10 B6500 DDP-316 DDP-316 DDP-316

Server Remote Job Service now, Time-sharing in January October11 November Server soon NCC Server Soon Server User only January October 11 Soon User only Soon Uncertain November User only December 15 January Uncertain Terminal IMP Terminal IMP Terminal IMP(Prototype)

John Postel Steve Wolf John Melvin Len Chaiten Jim White Barry Wessler Alex McKenzie Dan Murphy Mike Padlipsky Bob Bressler Eric Harslem Eric Harslem Bob Long Bob Sundberg Bob Sundberg Joel Winnet Tom Barklow Andy Moorer John Cravits Charles Rose Hal Van Zoeren John Cravits Does not apply Does not apply Does not apply

Westheimer

[Page 3]


RFC 235

Site Status

September 1971

NETWORK SITE ADDRESS 1 *65 2 66 3 4 69 6 70 8 9 10 UCLA UCLA SRI(NIC) SRI(AI) UCSB UTAH BBN MIT(Multics) MIT(DM) SDC HARVARD LINCOLN

COMPUTER

SIGMA 7 PDP-10 PDP-10 PDP-10 IBM-360 PDP-10 PDP-10 DDP-645 PDP-10 IBM-360 PDP-10 IBM-360

DATE AND TIME (P.M.) 9/13 9/14 9/15 9/16 4:30 3:30 6:00 10:30 0 0 0 D 0 0 0 0 D D D D D D D D 0 0 0 0 D D D D 0 1/2 0 0 T R R R D T T T O D D D D T D T T D 1/2 0 1/2 0 D

9/17 1:30 D 0 D D 0 D 1/2 0 1/2 0 0 T T T

NETWORK SITE ADDRESS 1 *65 2 66 3 4 69 6 70 8 9 10 UCLA UCLA SRI(NIC) SRI(AI) UCSB UTAH BBN MIT(Multics) MIT(DM) SDC HARVARD LINCOLN

COMPUTER

SIGMA 7 PDP-10 PDP-10 PDP-10 IBM-360 PDP-10 PDP-10 DDP-645 PDP-10 IBM-360 PDP-10 IBM-360

DATE AND TIME (P.M.) 9/20 9/21 9/22 9/23 9/24 12:30 4:30 3:30 2:00 5:00 D 0 D T 0 D 0 0 0 0 D D 0 D D D D D D D 0 0 0 0 0 D D D D D 0 1/2 0 0 1/2 0 0 D 1/2 0 T T R T 1/2 0 0 D TD D D D D D T D T D D 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.)

Westheimer

[Page 4]


RFC 235

Site Status

September 1971

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, ViagИnie 10/99]

Westheimer

[Page 5]