Date: Thu, 26 Mar 1998 03:20:52 +0700 (JAVT) From: Arman Hazairin Hasan <arman@ai3.net> To: David Greenman <dg@root.com> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: TCP connection hang Message-ID: <Pine.BSF.3.96.980326030137.13564A-100000@aladin.hq.telkomsel.co.id> In-Reply-To: <199803251944.LAA12602@implode.root.com>
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On Wed, 25 Mar 1998, David Greenman wrote: > >netstat -s output: > >tcp: > > 405919 discarded for bad checksums > > Wow, that's a lot of bad checksums. Hehehe.... that numbers come because that machine already up for 139 days without any interruption (Gee this is FreeBSD). And, we already try to transfer binary file since that time (of course the result is the same :) So, basically its about 7 count of checksum error if you compare it to the status before and after ftp session. > >So, is it mean that SCO implementation has problem, or just wrong setup > >in > >that SCO box ? > > I think the problem is with the routers and not the computers. If the problem in the routers, why can i transfer 1.8MB of uuencoded file without any problem. Doesnt it suppose to do retransmission instead of just keep silent ? Maybe I should compare the tcpdump output of both side, and do \ packet dump (option x?) so we can lookup into tcp checksum. And see where the packet has been hamperred. Or maybe I just put FreeBSD box as a replacement for SCO :) Seems like good idea, anyone ? > -DG > > David Greenman > Core-team/Principal Architect, The FreeBSD Project -arman- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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