Date: Mon, 2 Jul 2001 20:54:24 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: Andre Grosse Bley <gandalf-hackers@nm.ruhr-uni-bochum.de> Cc: <freebsd-hackers@freebsd.org> Subject: Re: TCP Problems in 4.3 ? Message-ID: <20010702204926.K4818-100000@achilles.silby.com> In-Reply-To: <20010702110533.A45523@nm.ruhr-uni-bochum.de>
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On Mon, 2 Jul 2001, Andre Grosse Bley wrote: > Hello "Hackers", > > i think the tcp code in 4.3-RELEASE (and at least stable from last week) has > a serious bug in tcp handling: > > I use "LPRng 3.6.20" and openssh on the 4.3 box, lpd-server is on a 4.1 box. > Issuing 4-5 lpq's in a minute gives "Connection timed out". > First i thought it may be a problem with LPRng, but scp'ing large files > doesnt work anymore, too. Even ssh hangs sometimes. > I tried to disable the "newreno" stuff with sysctl, didnt change anything. > Why i suspect a tcp problem? Your description isn't exactly clear, but your problem may be fixed by applying the patch and following the directions in my recently posted message "Re: select fails to return incoming connect on FreeBSD-4.3" - see the freebsd-net archives. Note that the patch addresses _only_ problems with connections being established to the same host / port in a quick hurry. There are no known problems with connections terminating once a connection is established. I'm unable to ascertain which possibility you're describing when you say that scp transfers fail. If you're having trouble at the connection setup stage, apply the patch and flip the sysctl. Then see if it fixes your problem and get back to me. Thanks, Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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