Making TCP More Robust to Long Connectivity Disruptions (TCP-LCD)
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com>, tcpm mailing list <firstname.lastname@example.org>, tcpm chair <email@example.com> Subject: Document Action: 'Making TCP more Robust to Long Connectivity Disruptions (TCP-LCD)' to Experimental RFC The IESG has approved the following document: - 'Making TCP more Robust to Long Connectivity Disruptions (TCP-LCD)' <draft-ietf-tcpm-tcp-lcd-03.txt> as an Experimental RFC This document is the product of the TCP Maintenance and Minor Extensions Working Group. The IESG contact person is Lars Eggert. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-tcpm-tcp-lcd/
Technical Summary Disruptions in end-to-end path connectivity, which last longer than one retransmission timeout, cause suboptimal TCP performance. This document proposes an algorithm to make TCP more robust to long connectivity disruptions (TCP-LCD). It describes how standard ICMP messages can be exploited during timeout-based loss recovery to disambiguate true congestion loss from non-congestion loss caused by connectivity disruptions. Working Group Summary Nothing exceptional occurred during the working group process for this document. Document Quality There is an existing implementation in Linux, which was worked on by the document authors. This has been in the vanilla kernel since version 2.6.32 (for about a year) and always enabled. Several Linux distributions have shipped with this and no negative experiences have been reported that were isolated to this mechanism. Personnel Wesley Eddy (Wesley.M.Eddy@nasa.gov) is the document shepherd. Lars Eggert (firstname.lastname@example.org) has reviewed this document for the IESG.