I-D ACTION:draft-jayasumana-reorder-density-03.txt
Internet-Drafts@ietf.org Wed, 21 July 2004 22:34 UTC
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Subject: I-D ACTION:draft-jayasumana-reorder-density-03.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Reorder Density and Reorder Buffer-occupancy Density - Metrics for Packet Reordering Measurements Author(s) : A. Jayasumana, et al. Filename : draft-jayasumana-reorder-density-03.txt Pages : 26 Date : 2004-7-21 Out of order arrival of packets is a common occurrence on Internet, and it will be more widespread as the link speeds increase. Percentage packet reordering is vague and unclear. A good reorder metric will capture the occurrence and characteristics of reordering comprehensively, and have broader utility than merely distinguishing among different reordered sequences. Two metrics for packet reordering are presented, namely, Reorder Density (RD) and Reorder Buffer-occupancy Density (RBD). A threshold is used to clearly define when a packet is considered lost, to upper bound computational complexity at O(N), and to keep the memory requirement for evaluation independent of N, where N is the length of the packet sequence. RD is a comprehensive metric that captures the characteristics of reordering, while RBD evaluates the sequences from the point of view of recovery from reordering. These metrics are simple to compute yet comprehensive in their characterization of packet reordering. The measures are robust, and orthogonal to packet loss and duplication. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-jayasumana-reorder-density-03.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-jayasumana-reorder-density-03.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-jayasumana-reorder-density-03.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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