From owner-freebsd-isp Sun Sep 10 12:25:26 2000 Delivered-To: freebsd-isp@freebsd.org Received: from saturn.mikesweb.com (saturn.mikesweb.com [216.91.66.1]) by hub.freebsd.org (Postfix) with SMTP id A487937B422 for ; Sun, 10 Sep 2000 12:25:23 -0700 (PDT) Received: (qmail 32200 invoked from network); 10 Sep 2000 19:25:22 -0000 Received: from delta.mikesweb.com (HELO SUN.mikesweb.com) (@216.91.66.252) by saturn.mikesweb.com with SMTP; 10 Sep 2000 19:25:22 -0000 Message-Id: <4.3.2.7.2.20000910152245.00b83240@mail.mikesweb.com> X-Sender: sturdee@mail.mikesweb.com X-Mailer: QUALCOMM Windows Eudora Version 4.3.2 Date: Sun, 10 Sep 2000 15:24:18 -0400 To: sthaug@nethelp.no From: Mike Subject: Re: NIC settings Cc: wizard@sybaweb.co.za, freebsd-isp@FreeBSD.ORG In-Reply-To: <15368.968613173@verdi.nethelp.no> References: <4.3.2.7.2.20000910150718.00b3b530@mail.mikesweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org My reasoning was because of all the collisions, data packets were being resent at a high rate, filling up my T1s quicker, and causing a lot of interface resets on my router. When I went to a switch, I noticed about a 10% decrease in network traffic.. At 09:12 PM 9/10/2000 +0200, sthaug@nethelp.no wrote: > > Actually, switching to half duplex won't really help you a whole lot.. I > > had a 10mb hub that had the collision light almost always on. If you want > > to stop the collisions you'll want to replace your hub with a switch. > >Why on earth do you want to stop the collisions? Collisions are *normal* >and *expected* when you use half duplex Ethernet. Collisions seldom matter, >performance does. As Rich Seifert puts it, > > > A major preoccupation with network administrators these days seems to be > > monitoring and worrying about the number of collisions seen on Ethernet > > networks. There is a great deal of folklore and voodoo concerning what > > is an "acceptable" collision rate or collision percentage, and when is > > the network "broken" or on the verge of collapse. Except in the most > > extreme of circumstances (all of which are observable through other, > > better metrics), the number of collisions seen on a network in an > > uninteresting and misleading statistic. > >(If you don't know who Rich Seifert is, check out comp.dcom.lans.ethernet.) > >Steinar Haug, Nethelp consulting, sthaug@nethelp.no > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-isp" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message