A Michael F. Schwartz 

T A Measurement Study of Changes in Service-Level Reachability in
the Global TCPIP Internet: Goals, Experimental Design,
Implementation, and Policy Considerations 

I Department of Computer Science, University of Colorado,
Boulder, Colorado 

R Internet Request For Comments 1273 

D November 1991 

X Available from
ftp:ftp.cs.colorado.edupubcstechreportsschwartzInet.Meas.Plan.ps.Z or
ftp:ftp.cs.colorado.edupubcstechreportsschwartzInet.Meas.Plan.txt.Z or ftp:ftp.cs.colorado.edupubInetMeasStudyStudy.Plan 

X An Earlier version of this report appeared as University of
Colorado Technical Report CU-CS-551-91, October 1991. 

X "In this report we discuss plans to carry out a longitudinal
measurement study of changes in service-level reachability in the
global TCPIP Internet.  We overview our experimental design,
considerations of network and remote site load, mechanisms used
to control the measurement collection process, and network
appropriate use and privacy issues, including our efforts to
inform sites measured by this study.  A list of references and
information on how to contact the Principal Investigator are
included.