From owner-freebsd-questions Wed May 22 17:55:12 2002 Delivered-To: freebsd-questions@freebsd.org Received: from PHSEXCHICO.MGH.HARVARD.EDU (phsexchico.mgh.harvard.edu [132.183.126.50]) by hub.freebsd.org (Postfix) with ESMTP id 4670937B40C for ; Wed, 22 May 2002 17:55:00 -0700 (PDT) Received: by phsexchico.mgh.harvard.edu with Internet Mail Service (5.5.2650.21) id <2ZZYRC56>; Wed, 22 May 2002 20:54:56 -0400 Message-ID: <375F68784081D511908A00508BE3BB1701EF1AAC@phsexch22.mgh.harvard.edu> From: "Morse, Richard E." To: 'Maildrop' , Benjamin Krueger , Bill Moran Cc: questions@freebsd.org Subject: RE: Networking Buffers Date: Wed, 22 May 2002 20:54:54 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) 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 Maildrop [mailto:maildrop@qwest.net] wrote: >> [ a lot of stuff explaining the problem where every so often, a 4.5 server >> will drop off the network. ] I have this exact same problem. You can "solve" the symptom by doing a tcpdump. Since I know next-to-nothing about networking in-depth, my solution is that every hour or so, I have a cron job run 'tcpdump -c 10'. This has kept the box from dropping off the network, at the cost of getting an email every hour. The box that this is happening on is a backup server, and it will only happen while the backups are being run, so I suspect that there is some error related to heavy load on the network. If anyone _does_ solve this, or can explain it, I'd love to know about it... Thanks! Ricky To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message