Re: [tcpm] New Version Notification for draft-zimmermann-tcp-lcd-01
Alexander Zimmermann <alexander.zimmermann@nets.rwth-aachen.de> Fri, 14 August 2009 14:11 UTC
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From: Alexander Zimmermann <alexander.zimmermann@nets.rwth-aachen.de>
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Date: Fri, 14 Aug 2009 16:10:28 +0200
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Subject: Re: [tcpm] New Version Notification for draft-zimmermann-tcp-lcd-01
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Hi again, at the TCPM meeting in Stockholm it was decided to take the discussion on whether there's interest in adopting this as a WG item to the mailing list since besides a dozen supporters we had only two or three readers... Alex Am 13.07.2009 um 22:43 schrieb Alexander Zimmermann: > Hi folks, > > I upload a new version of our draft to the IETF repository: > http://www.ietf.org/internet-drafts/draft-zimmermann-tcp-lcd-01.txt > > Comments are more than welcome. > I'm looking forward to seeing you in Stockholm. > > Alex > > > Filename: draft-zimmermann-tcp-lcd > Revision: 01 > Title: Make TCP more Robust to Long Connectivity Disruptions > Creation_date: 2009-07-13 > WG ID: Independent Submission > Number_of_pages: 16 > > Abstract: > Disruptions in end-to-end path connectivity which last longer than > one retransmission timeout cause suboptimal TCP performance. The > reason for the performance degradation is that TCP interprets segment > loss induced by connectivity disruptions as a sign of congestion, > resulting in repeated backoffs of the retransmission timer. This > leads in turn to a deferred detection of the re-establishment of the > connection since TCP waits until the next retransmission timeout > occurs before attempting the retransmission. > > This document describes how standard ICMP messages can be exploited > to disambiguate true congestion loss from non-congestion loss caused > by long connectivity disruptions. Moreover, a revert strategy of the > retransmission timer is specified that enables a more prompt > detection of whether the connectivity to a previously disconnected > peer node has been restored or not. The specified algorithm is a TCP > sender-only modification that effectively improves TCP performance in > presence of connectivity disruptions. > <PGP.sig><ATT00001.txt> // // Dipl.-Inform. Alexander Zimmermann // Department of Computer Science, Informatik 4 // RWTH Aachen University // Ahornstr. 55, 52056 Aachen, Germany // phone: (49-241) 80-21422, fax: (49-241) 80-22220 // email: zimmermann@cs.rwth-aachen.de // web: http://www.umic-mesh.net //
- [tcpm] New Version Notification for draft-zimmerm… Alexander Zimmermann
- Re: [tcpm] New Version Notification for draft-zim… Alexander Zimmermann