From owner-freebsd-isp  Sun Sep 10 12:32:32 2000
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To: mike@mikesweb.com
Cc: wizard@sybaweb.co.za, freebsd-isp@FreeBSD.ORG
Subject: Re: NIC settings
From: sthaug@nethelp.no
In-Reply-To: Your message of "Sun, 10 Sep 2000 15:24:18 -0400"
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Date: Sun, 10 Sep 2000 21:32:27 +0200
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> 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..

Then I think you should look for other causes for this change. A collision
does *not* result in a whole packet being "wasted" (as many people seem to
think) - it uses *up to* (512 + 32) bit, ie. 68 byte. You'd need a lot of 
very small packets, and a rather high collision rate, to get a 10% increase
in traffic due to collisions.

Steinar Haug, Nethelp consulting, sthaug@nethelp.no


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