Enhancing TCP's Loss Recovery Using Early Duplicate Acknowledgment Response

Document Type Expired Internet-Draft (individual)
Authors Hari Balakrishnan  , Sally Floyd , Mark Allman 
Last updated 2000-06-05
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document proposes two new TCP mechanisms that can be used to more effectively recover lost segments when a connection's congestion window is small, or when a large number of segments are lost in a single transmission window. The first of these mechanisms, 'Limited Transmit', calls for sending a new data segment in response to each of the first two duplicate acknowledgments that arrive at the sender. The second mechanism is to reduce, in certain special circumstances, the number of duplicate acknowledgments required to trigger a fast retransmission.


Hari Balakrishnan (hari@lcs.mit.edu)
Sally Floyd (floyd@icir.org)
Mark Allman (mallman@icir.org)

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