I-D ACTION:draft-irtf-tmrg-tools-00.txt
Internet-Drafts@ietf.org Wed, 14 September 2005 19:50 UTC
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Subject: I-D ACTION:draft-irtf-tmrg-tools-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Tools for the Evaluation of Simulation and Testbed Scenarios Author(s) : S. Floyd, E. Kohler Filename : draft-irtf-tmrg-tools-00.txt, .ps Pages : 15 Date : 2005-9-14 This document describes tools for the evaluation of simulation and testbed scenarios used in research on Internet congestion control mechanisms. We believe that research in congestion control mechanisms has been seriously hampered by the lack of good models underpinning analysis, simulation, and testbed experiments, and that tools for the evaluation of simulation and testbed scenarios can help in the construction of better scenarios, based on better underlying models. One use of the tools described in this document is in comparing key characteristics of test scenarios with known characteristics from the diverse and ever-changing real world. Tools characterizing the aggregate traffic on a link include the distribution of per-packet round-trip times, the distribution of packet sequence numbers, and the like. Tools characterizing end-to- end paths include drop rates as a function of packet size and of burst size, the synchronization ratio between two end-to-end TCP flows, and the like. For each characteristic, we describe what aspects of the scenario determine this characteristic, how the characteristic can affect the results of simulations and experiments for the evaluation of congestion control mechanisms, and what is known about this characteristic in the real world. We also explain why the use of such tools can add considerable power to our understanding and evaluation of simulation and testbed scenarios. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-irtf-tmrg-tools-00.txt To remove yourself from the I-D Announcement list, send a message to i-d-announce-request@ietf.org with the word unsubscribe in the body of the message. You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce to change your subscription settings. Internet-Drafts are also available by anonymous FTP. Login with the username "anonymous" and a password of your e-mail address. After logging in, type "cd internet-drafts" and then "get draft-irtf-tmrg-tools-00.txt". A list of Internet-Drafts directories can be found in http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt Internet-Drafts can also be obtained by e-mail. Send a message to: mailserv@ietf.org. In the body type: "FILE /internet-drafts/draft-irtf-tmrg-tools-00.txt". NOTE: The mail server at ietf.org can return the document in MIME-encoded form by using the "mpack" utility. To use this feature, insert the command "ENCODING mime" before the "FILE" command. To decode the response(s), you will need "munpack" or a MIME-compliant mail reader. Different MIME-compliant mail readers exhibit different behavior, especially when dealing with "multipart" MIME messages (i.e. documents which have been split up into multiple messages), so check your local documentation on how to manipulate these messages. Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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