I-D ACTION:draft-pullen-srmp-06.txt
Internet-Drafts@ietf.org Thu, 30 June 2005 22:51 UTC
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Subject: I-D ACTION:draft-pullen-srmp-06.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : Selectively Reliable Multicast Protocol (SRMP) Author(s) : M. Pullen, et al. Filename : draft-pullen-srmp-06.txt Pages : 27 Date : 2005-6-30 The Selectively Reliable Multicast Protocol (SRMP) is a transport protocol, intended to deliver a mix of reliable and best-effort messages in an any-to-any multicast environment, where the best- effort traffic occurs in significantly greater volume than the reliable traffic and therefore can be used to carry sequence numbers of reliable messages for loss detection. SRMP is intended for use in a distributed simulation application environment, where only the latest value of reliable transmission for any particular data identifier requires delivery. SRMP has two sublayers: a bundling sublayer that combines short messages, peforms NAK suppression, and incorporates the TCP-Friendly Multicast Congestion Control of Widmer and Handley, dropping best- effort traffic in order to achieve congestion control; and a selectively reliable transport (SRT) sublayer that formats best- effort and reliable transmissions and also creates negative acknowledgements when loss of reliable messages is detected. In SRMP, selection between reliable and best-effort messages is performed by the application. The protocol bundles messages within a configured time interval, attempting to achieve a configured bundle size which typically is set to the expected smallest MTU in the delivery path. The bundle header carries the latest sequence number for each reliable transmission. Rate reduction is achieved when necessary by dropping best-effort messages at random. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-pullen-srmp-06.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-pullen-srmp-06.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-pullen-srmp-06.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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