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+Network Working Group                                   Abhay K. Bhushan
+RFC # 523                                                       MIT-DMCG
+NIC # 17048                                                 June 5, 1973
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+                      SURVEY is in Operation Again
+
+The purpose of this message is to inform the network community that the
+survey program at MIT-DMCG computer system is in operation now.  We are
+surveying hosts every 20 minutes instead of the earlier 15 minutes.  It
+appears that some sites had problems with incomplete ICP's when survey
+first came up.  The problem has definitely been fixed now.  Please let
+me know (tel 617-253-1428 or 253-1449) if any site is being
+inconvenienced by the survey program.  Upon written request I will be
+willing to not survey a particular server site.  Upon oral or written
+request, 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 complete
+ICP, ie establish telnet connections and then close them.  The time for
+response is now the time to establish the telnet connections, so if your
+response time shows a larger number don't be alarmed (I think the new
+numbers are more meaningful and reflect the situation more accurately.)
+
+We are also providing a NETSTATUS service on socket 15. (decimal).  So
+if you ICP to host 70 socket 15., you will get the following output:
+
+        mm,dd.yyyy,hh,mm
+        nnn,c,ttt
+        nnn,c,ttt
+        .......
+        -1
+
+Where first item is month, day, year, hour, minute and then is a list of
+host numbers, code, response time in tenths of second.  The list ends
+with a minus 1, and we close the connections right after sending data
+(The service is designed so that both human users and programs can use
+the data ).  You can of course log into dmcg and use our NETWRK
+subsystem which has commands for displaying the survey data in many
+formats (Ref. RFC 308, NIC 9259).  We are also recording this data on
+the DATACOMPUTER (CCA).  Your comments and suggestions will be
+appreciated.
+
+                        Thank You
+
+                                                           Abhay Bhushan
+                                                AKB@DMCG (NIC ident AKB)
+
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+
+Bhushan                                                         [Page 1]
+
+RFC 523               SURVEY is in Operation Again             June 1973
+
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+       [ 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 ]
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+Bhushan                                                         [Page 2]
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