Submission for mod-protocols-tcp-ip

Gordan Palameta (genat!maccs!gordan@seismo.CSS.GOV)
4 Apr 87 03:48:51 GMT

Path: maccs!gordan
From: From: gordan@maccs.UUCP (Gordan Palameta)
Newsgroups: mod.protocols.tcp-ip
Subject: TCP retransmission
Keywords: retransmission algorithm
Message-ID: <519@maccs.UUCP>
Date: 4 Apr 87 03:48:50 GMT
Reply-To: Reply-To: gordan@maccs.UUCP (Gordan Palameta)
Distribution: world
Organization: DCSS, McMaster University, Hamilton, Ontario, Canada
Lines: 20


I'm currently writing some TCP-IP code (for a PDP-11 running RT-11), and am
looking to do retransmissions correctly.

>From what I've read here, poor retransmission behavior is a major source
of congestion... although my code is intended for a very lightly loaded
Ethernet and I can get away with being sloppy, if there's a painless way to
do it right for the general case, it would be nice to put it in.

I understand the idea of exponential backoff, and know of the RTT-based
algorithm suggested in the RFC (which I believe is what BSD 4.2 uses (?))...
is this the proper algorithm to use, or is there a better one?

Thanks for any info...

UUCP:  ... !seismo!mnetor!lsuc!maccs!gordan   (note ..dAn or mail may bounce)
		    Gordan Palameta

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