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Title : TS2 --- A Modified TCP Timestamps Mechanism
Author(s) : N. Demizu
Filename : draft-demizu-tcp-ts2-01.txt
Pages : 91
Date : 2006-3-3
This memo proposes a modified TCP Timestamps mechanism called "TS2".
It uses the existing "TCP Timestamps option" specified in RFC1323 and
a new TCP option called "the TCP Old Timestamps option", which is
specified in this memo. As a fallback, an RFC1323-compatible mode
called "TS1" is also available.
The base mechanism of TS2 includes the definitions of those two TCP
Timestamps options, mode negotiation to enable TS1 or TS2, and a rule
for updating internal states. The applied mechanisms of TS2 include
an accurate RTT measurement mechanism that is correct even for
duplicate ACK segments (RTTM/TS2), a reordering-robust mechanism to
detect wrapped sequence numbers (PAWS/TS2), a lightweight mechanism
to detect spoofed segments (PASA/TS2), a loss inference mechanism
applicable to both original and retransmitted data segments
(DLI/TS2), and a spurious loss inference detection mechanism that
operates without waiting for one RTT by sending arbitrary in-window
data (SLID/TS2).
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