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[   ]FlowScan-1.005.tar.gz 19-Oct-2000 14:27 113K 
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README - information about FlowScan


README - information about FlowScan


FlowScan is a system to analyze and report on flows collected using Cflowd. This document is the FlowScan README $Revision: 1.7 $, $Date: 2000/10/19 18:42:43 $.


I'm pleased to announce the release of FlowScan-1.005. FlowScan is a tool to monitor and graph flow information from Cisco routers in near real-time.

Amonst many other things, FlowScan optionally measures and graphs traffic for applications such as Napster. A sample of what FlowScan can do is at:

Changes in FlowScan-1.005 (since FlowScan-1.003)


FlowScan is licensed under the GNU General Public License, and is available to you at:

Mailing Lists

There are two mailing lists having to do with FlowScan:

The lists' respective archives are available at:


Announcements will be ``cross-posted'' to both lists, so there's no need to join both.

These lists are hosted by the Division of Information Technology's Network Engineering Technology group at the University of Wisconsin - Madison. To subscribe to either of them, send email to:

containing either:

   subscribe flowscan


   subscribe flowscan-announce

You should receive an automatic response that will request that you verify your request to become a member of the list, to which you must reply with the authentication information there-in. Then, in response to your reply, you should receive a welcome message. If you have any questions about the administrative policies of this list's manager, please contact:



If you're interested in Napster specifically, note the graph labeled ``Well Known Services Mb/s'' here:

or, directly, here:

I have written a general document about the Napster portion of the measurement at:

Some related research on Napster flows is at:


   Alexander Kunz <>
   Kevin Gannon <>
   John Payne <>


I'd like to thank the FlowScan beta testers (since September 1999), early users, and participants in the FlowScan mailing list for their efforts and feedback.

Also, thanks to Daniel McRobb, Tobi Oetiker, and CAIDA for providing the main tools upon which FlowScan is built, namely ``cflowd'' and ``RRDTOOL''.

Copyright and Disclaimer

Note that this document is provided `as is'. The information in it is not warranted to be correct. Use it at your own risk.

   Copyright (c) 2000 Dave Plonka <>.
   All rights reserved.

This document may be reproduced and distributed in its entirety (including this authorship, copyright, and permission notice), provided that no charge is made for the document itself.