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Network Working Group                                   Abhay K. BhushanRFC # 523                                                       MIT-DMCGNIC # 17048                                                 June 5, 1973SURVEY is in Operation AgainThe purpose of this message is to inform the network community that thesurvey program at MIT-DMCG computer system is in operation now.  We aresurveying hosts every 20 minutes instead of the earlier 15 minutes.  Itappears that some sites had problems with incomplete ICP's when surveyfirst came up.  The problem has definitely been fixed now.  Please letme know (tel 617-253-1428 or 253-1449) if any site is beinginconvenienced by the survey program.  Upon written request I will bewilling to not survey a particular server site.  Upon oral or writtenrequest, I will add sites who wish to be surveyed but are not surveyed.The sites currently being surveyed are (host number in decimal):1,2,3,4,6,7,8,9,10,11,13,14,15,16,23,31,32,35,65,66,69,70,74,78,86,133,134,138,198.  We issue an RFC to socket1 and now go though the completeICP, ie establish telnet connections and then close them.  The time forresponse is now the time to establish the telnet connections, so if yourresponse time shows a larger number don't be alarmed (I think the newnumbers are more meaningful and reflect the situation more accurately.)We are also providing a NETSTATUS service on socket 15. (decimal).  Soif you ICP to host 70 socket 15., you will get the following output:        mm,dd.yyyy,hh,mm        nnn,c,ttt        nnn,c,ttt        .......        -1Where first item is month, day, year, hour, minute and then is a list ofhost numbers, code, response time in tenths of second.  The list endswith a minus 1, and we close the connections right after sending data(The service is designed so that both human users and programs can usethe data ).  You can of course log into dmcg and use our NETWRKsubsystem which has commands for displaying the survey data in manyformats (Ref.RFC 308, NIC 9259).  We are also recording this data onthe DATACOMPUTER (CCA).  Your comments and suggestions will beappreciated.                        Thank You                                                           Abhay Bhushan                                                AKB@DMCG (NIC ident AKB)Bhushan                                                         [Page 1]

RFC 523               SURVEY is in Operation Again             June 1973       [ This RFC was put into machine readable form for entry ]       [ into the online RFC archives by Alex McKenzie with    ]       [ support from GTE, formerly BBN Corp.            10/99 ]Bhushan                                                         [Page 2]