From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alessandro Suardi Subject: Re: analysis of TCP window size issues still around - several reports / SACK involved? Date: Wed, 07 Jul 2004 23:25:38 +0200 Sender: netdev-bounce@oss.sgi.com Message-ID: <40EC6A52.70207@oracle.com> References: <32886.63.170.215.71.1088564087.squirrel@www.osdl.org> <20040629222751.392f0a82.davem@redhat.com> <20040630152750.2d01ca51@dell_ss3.pdx.osdl.net> <20040630153049.3ca25b76.davem@redhat.com> <20040701133738.301b9e46@dell_ss3.pdx.osdl.net> <20040701140406.62dfbc2a.davem@redhat.com> <20040702013225.GA24707@conectiva.com.br> <20040706093503.GA8147@outpost.ds9a.nl> <20040706131955.3a3c6c8b.davem@redhat.com> <20040706202708.GA1385@outpost.ds9a.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: "David S. Miller" , acme@conectiva.com.br, shemminger@osdl.org, netdev@oss.sgi.com, phyprabab@yahoo.com Return-path: To: bert hubert In-Reply-To: <20040706202708.GA1385@outpost.ds9a.nl> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org bert hubert wrote: > On Tue, Jul 06, 2004 at 01:19:55PM -0700, David S. Miller wrote: > > >>rather it do this, so that diagnosing dumps are easier. If tcpdump >>tries to be too clever, scaling the window, then I might end up >>chasing down a tcpdump bug rather than a TCP one :-) > > > True - it might want to print '43 (*128=5706)' or something like that. > > >>What would be more interesting is to get the tcpdump trace from the >>other side of this connection. This is crucial, as it will show how >>and in what way exactly the window scale options and/or window fields >>are being edited by a firewall or other device and thus causing >>the problems. > > > I have an appointment with Alessandro tomorrow evening at 11PM CEST to do > just that. Sorry about being slightly late - I read the thread from my VPN link (which does work), now I'm turning it off and will email Bert with my actual IP address and my connection. Thanks, --alessandro "Practice is more important than theory. A _lot_ more important." (Linus Torvalds on lkml, 1 June 2004)