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Title : TCP Retransmit (RXT) Flag
Author(s) : R. Ludwig
Filename : draft-ludwig-tsvwg-tcp-rxt-flag-00.txt
Pages : 5
Date : 16-Jul-01
This document proposes a solution to TCP∆s retransmission ambiguity
problem that is based on using a single bit, named the Retransmit
(RXT) flag, taken from the Reserved field of the TCP header. The TCP
sender sets the RXT flag in segments containing retransmitted data
while the TCP receiver responds with an immediate pure ACK with the
RXT flag set. This solution effectively avoids the unnecessary go-
back-N retransmits that typically occur after a spurious timeout.
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