From: Ruhai Wang (wangnewton2000@yahoo.com)
Date: 02/26/04
Message-ID: <20040227011344.7795.qmail@web40807.mail.yahoo.com> Date: Thu, 26 Feb 2004 17:13:44 -0800 (PST) From: Ruhai Wang <wangnewton2000@yahoo.com> Subject: RE: tcptrace Regarding RTO value of Linux TCP
Juan:
Thanks for the response. You did answer my question.
I believe your understanding is correct.
The question originally came from a discussion about
packets retransmissions. Please see the attached pdf
file which contains two TSG and one RTT plots. The
second TSG plot is the enlarged view of a
retransmission scenario in which four consecutive
packets are retransmitted as you can observe clearly.
The RTT is for the transmission which has two
retransmission scenarios occurred. The transmission
was done using Linux 7.4 TCP SACK over a CLEAN channel
(BER=0) with RTT around 270 ms in a lab. It appears
the retransmissions are caused by retransmission timer
out rather than bit error corruption since no bit
error is introduced to the channel. What do you think?
Wang
--- Juan Francisco Torreblanca
<juan.torreblanca@tartec.com> wrote:
> RTO changes dynamically based on every measured RTT.
> As far as I know, RTO doesn't have a known value for
> any TCP implementation, are you referring to this or
> am I missing something?
>
> Rgds,
> Juan Torreblanca.
>
> -----Original Message-----
> From: Ruhai Wang [mailto:wangnewton2000@yahoo.com]
> Sent: sábado, 21 de febrero de 2004 21:50
> To: tcptrace@tcptrace.org
> Subject: tcptrace Regarding RTO value of Linux TCP
>
> Does anyone know the specified value of
> Retransmission
> Time Out(RTO) for Red Hat Linux 7.4 TCP?
>
> Thanks!
>
> Wang
>
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