From owner-freebsd-questions Tue Oct 16 6:42: 8 2001 Delivered-To: freebsd-questions@freebsd.org Received: from deputydog.aecc.com (deputydog.aecc.com [209.136.90.6]) by hub.freebsd.org (Postfix) with ESMTP id 8053737B408 for ; Tue, 16 Oct 2001 06:42:01 -0700 (PDT) Received: from gumby.aecc.com (unverified) by deputydog.aecc.com (Content Technologies SMTPRS 4.2.5) with ESMTP id for ; Tue, 16 Oct 2001 08:44:30 -0500 Received: by GUMBY with Internet Mail Service (5.5.2653.19) id <4VDLZ00F>; Tue, 16 Oct 2001 08:41:45 -0500 Message-ID: <13909109FC93D111853100A0C99AF44C048194C9@GUMBY> From: Raymon Gentry To: "'freebsd-questions@FreeBSD.ORG'" Subject: FreeBSD success and ponderings??? Date: Tue, 16 Oct 2001 08:41:43 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I used FreeBSD 4.4 release on a Toshiba laptop (75Mhz) to troubleshoot a network problem we were having at on of our Hydro electric power plants. We have been experiencing network slowdown and data loss in the past. I installed the 4.4 release along with Ethereal and bing on my testing laptop the night before I went to the plant. Running Ethereal I found a normal type of communication - not any excessive arping - nothing packet storming so I turned to bing. We use a 56k leased line that I suspected of having some attenuation problems at first. I used bing (yes bing not ping) to measure the available bandwidth across the 56k leased line but couldn't communicate with the remote router. I tried to ping the remote router with no success. . All the windows machines could ping across the 56k line but my BSD box couldn't (strange) , While eliminating the possibilities of hardware problems on my end - I found a hub that was attenuating the signal (packet) strength. I replaced the hub and the system started working properly. I then used bing to measure the throughput of the 56k line and it met exceptionally well with slightly over 56k. (I know that there are other tools that would be a better test - but bing can be used from one location and its results are adequate) Now my question - Why would the windows box see the "weakened" packets but my BSD box would not? - anybody? In this case it was a good thing for diagnostic purposes Thanks RG To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message