[Tsvwg] new draft on mitigating effects of reordering
Mark Allman <mallman@grc.nasa.gov> Tue, 11 February 2003 05:08 UTC
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To: tsvwg@ietf.org
Cc: Bob Dimond <bdimond@grc.nasa.gov>, Ethan Blanton <eblanton@prime.cs.ohiou.edu>
From: Mark Allman <mallman@grc.nasa.gov>
Reply-To: mallman@grc.nasa.gov
Organization: BBN Technologies/NASA GRC
Song-of-the-Day: Paradise City
Date: Tue, 11 Feb 2003 00:11:01 -0500
Subject: [Tsvwg] new draft on mitigating effects of reordering
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Folks-
Ethan Blanton, Bob Dimond and I have just submitted the following
Internet-Draft:
Ethan Blanton, Robert Dimond, Mark Allman. Practices for TCP
Senders in the Face of Segment Reordering, February
2003. Internet-Draft draft-blanton-tcp-reordering-00.txt (work
in progress).
http://roland.grc.nasa.gov/~mallman/papers/draft-blanton-tcp-reordering-00.txt
The i-d should pop out in the usual places in a couple of days.
Until then you can slurp it at the URL above.
The background.... At the last IETF meeting I gave quick status on
draft-blanton-dsack-use-02.txt -- which outlines how to use DSACK
information to reliably detect spurious retransmits. The question
then was "who cares? I can't do anything anyway". And, that is
true. Hence the above i-d (which is really a large update to an
old, outdated and expired i-d).
The above i-d does not specify how to decide when you have
retransmitted needlessly. That is left to other i-ds (our DSACK
version or eifel or frto or ...). The above i-d specifies what you
can do with your congestion control state (basically undo bogus
changes) and a few different mitigations for changing the fast
retransmit trigger so that you prevent future needless retransmits.
It's -00 and we're sure it is rough around the edges. But, we'd
appreciate any comments folks might have on it.
Thanks!
allman
--
Mark Allman -- BBN/NASA GRC -- http://roland.grc.nasa.gov/~mallman/
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