[tcpm] early retransmit redux
Mark Allman <mallman@icir.org> Wed, 16 May 2007 03:11 UTC
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From: Mark Allman <mallman@icir.org>
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Subject: [tcpm] early retransmit redux
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Folks- A long time ago a bunch of us wrote a draft on 'early retransmit', which is essentially allowing TCPs to trigger fast retransmit on one or two dupacks when the cwnd is small enough such that three dupacks could never be generated for a loss. We pushed this in TSVWG before TCPM was formed. We stopped pushing this I-D because some of our analysis of network traces seemed to indicate that ER was sort of a crapshoot, failing as much as succeeding. However, given that we never went beyond sort of a preliminary assessment and did not publish the results (/ let them stand against peer review) we no longer think we should stop the ER draft because of these results. Further, the results were from one particular network and it would seem useful to gain a broad understanding of how ER works in a variety of environments. My recollection is that once upon a time the TSVWG had some consensus to take on ER as a work item with the intention of publishing it as an experimental RFC. We have advertised a revision of the document and gotten no reaction within TSVWG. I wonder if this WG might have any thoughts on whether this should be worked up into an RFC or not. The draft is: http://www.icir.org/mallman/papers/draft-allman-tcp-early-rexmt-04.txt Comments, questions, etc. welcome. Thanks in advance! allman (Oh- all this with my co-chair hat off, of course.)
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- [tcpm] early retransmit redux Mark Allman