A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : F-RTO: A TCP RTO Recovery Algorithm for Avoiding
Unnecessary Retransmissions
Author(s) : P. Sarolahti, M. Kojo
Filename : draft-sarolahti-tsvwg-tcp-frto-02.txt
Pages : 15
Date : 2002-11-7
Spurious retransmission timeouts (RTOs) cause suboptimal TCP
performance, because they often result in unnecessary retransmission
of the last window of data. This document describes the 'Forward RTO
Recovery' (F-RTO) algorithm for recovering from the TCP RTOs
efficiently even when the RTO was spurious. F-RTO is a TCP sender
only algorithm that does not require any TCP options to operate.
After retransmitting the first unacknowledged segment triggered by an
RTO, the F-RTO algorithm at a TCP sender monitors the incoming
acknowledgements to determine whether the timeout was spurious and to
decide whether to send new segments or retransmit unacknowledged
segments. The algorithm effectively avoids additional unnecessary
retransmissions and thereby improves TCP performance in case of a
spurious timeout.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-sarolahti-tsvwg-tcp-frto-02.txt
To remove yourself from the IETF Announcement list, send a message to
ietf-announce-request with the word unsubscribe in the body of the message.
Internet-Drafts are also available by anonymous FTP. Login with the username
"anonymous" and a password of your e-mail address. After logging in,
type "cd internet-drafts" and then
"get draft-sarolahti-tsvwg-tcp-frto-02.txt".
A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt
Internet-Drafts can also be obtained by e-mail.
Send a message to:
[EMAIL PROTECTED]
In the body type:
"FILE /internet-drafts/draft-sarolahti-tsvwg-tcp-frto-02.txt".
NOTE: The mail server at ietf.org can return the document in
MIME-encoded form by using the "mpack" utility. To use this
feature, insert the command "ENCODING mime" before the "FILE"
command. To decode the response(s), you will need "munpack" or
a MIME-compliant mail reader. Different MIME-compliant mail readers
exhibit different behavior, especially when dealing with
"multipart" MIME messages (i.e. documents which have been split
up into multiple messages), so check your local documentation on
how to manipulate these messages.
Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.
- <ftp://ftp.ietf.org/internet-drafts/draft-sarolahti-tsvwg-tcp-frto-02.txt>
-
