A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Transport Area Working Group Working Group of the
IETF.
Title : The Eifel Detection Algorithm for TCP
Author(s) : R. Ludwig, M. Meyer
Filename : draft-ietf-tsvwg-tcp-eifel-alg-05.txt
Pages : 11
Date : 2002-10-14
The Eifel detection algorithm allows the TCP sender to detect a
posteriori whether it has entered loss recovery unnecessarily. It
already determines this in the beginning of loss recovery when the
first acceptable ACK arrives after the timeout-based retransmit or
the fast retransmit has been sent. The algorithm requires that the
TCP Timestamps option defined in RFC1323 is enabled for a connection.
The idea is to use the timestamps echoed in returning ACKs to
eliminate the retransmission ambiguity in TCP. The Eifel detection
algorithm provides a basis for future TCP enhancements. This includes
response algorithms to back out of loss recovery by restoring a TCP
sender's congestion control state.
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