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Simple Lost Retransmission Detection with SACK TCP

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Richard Scheffenegger
Last updated 2021-09-13 (Latest revision 2021-03-12)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Lost Retransmissions are a major source of latency for TCP transfers. This note specifies how selective acknowledgment (SACK) information can be used to timely recover from lost retransmissions. In addition, it codifies the congestion control reaction on lost retransmissions.


Richard Scheffenegger

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)