From: bert hubert <ahu@ds9a.nl>
To: Bjorn Wesen <bjorn.wesen@axis.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: What is TCPRenoRecoveryFail ?
Date: Wed, 27 Feb 2002 15:27:05 +0100 [thread overview]
Message-ID: <20020227152705.A18366@outpost.ds9a.nl> (raw)
In-Reply-To: <Pine.LNX.3.96.1020227144128.18713E-100000@fafner.axis.se>
In-Reply-To: <Pine.LNX.3.96.1020227144128.18713E-100000@fafner.axis.se>; from bjorn.wesen@axis.com on Wed, Feb 27, 2002 at 01:46:55PM +0000
On Wed, Feb 27, 2002 at 01:46:55PM +0000, Bjorn Wesen wrote:
> I have a TCP connection that is sending bulk data from a Linux 2.4.17
> machine to a client. At some point, one of the packets from the Linux
> machine is lost, so the client asks for a retransmit by acking the last
> received correct packet. Then the Linux machine just keeps filling the
> clients open window, ignoring that and subsequent retransmit requests,
> never retransmitting any data.
Please show a tcpdump -v of this happening, including the initial SYN
packets. I strongly suspect something in your network of mucking with TCP
options.
> Around the time of the packet loss happened, the counter
> TCPRenoRecoveryFail increased by one, but I'm not sufficiently into the
> TCP code to figure out why that happens and if that is the reason why
> Linux stop retransmitting anything.. any ideas ?
See RFC2001. Might well be related.
Regards,
bert
--
http://www.PowerDNS.com Versatile DNS Software & Services
http://www.tk the dot in .tk
http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
next prev parent reply other threads:[~2002-02-27 14:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-27 13:45 Bjorn Wesen
2002-02-27 14:27 ` bert hubert [this message]
2002-02-27 18:22 ` Bjorn Wesen
2002-02-27 23:00 ` bert hubert
2002-02-27 23:13 ` Bjorn Wesen
[not found] <Pine.LNX.3.96.1020227144128.18713E-100000@fafner.axis.se.suse.lists.linux.kernel>
2002-02-27 14:46 ` Andi Kleen
2002-02-27 17:03 Nivedita Singhvi
2002-02-27 17:06 ` David S. Miller
2002-02-27 17:25 Nivedita Singhvi
2002-02-28 0:14 Nivedita Singhvi
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