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Date:      Sun, 16 Mar 2003 14:35:54 -0600
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Olivier Dony <odony@student.info.ucl.ac.be>
Cc:        Bill Moran <wmoran@potentialtech.com>, Simon Barner <barner@in.tum.de>, freebsd-questions@FreeBSD.ORG
Subject:   Re: Too many collisions on network?
Message-ID:  <20030316203554.GC64222@dan.emsphone.com>
In-Reply-To: <025601c2ebf5$5abc25f0$1502a8c0@blacktrap.net>
References:  <005d01c2ebcb$82b343b0$1502a8c0@blacktrap.net> <20030316152335.GA1434@zi025.glhnet.mhn.de> <002201c2ebd3$92d0a7d0$1502a8c0@blacktrap.net> <3E74B8BC.4030009@potentialtech.com> <025601c2ebf5$5abc25f0$1502a8c0@blacktrap.net>

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In the last episode (Mar 16), Olivier Dony said:
> o On the server I was talking about earlier, here is an excerpt of
>   netstat while switching from half to full-duplex and back :
> 
>             input        (Total)           output
>    packets  errs      bytes    packets  errs      bytes colls
>        900     0     141953       1261     0    1351094   633
>  -> going full-duplex... here I guess
>        462    12      61552        546     0     649187     0
>  -> back to half-duplex with autoselect .. looks like here
>        815     0     150286       1128     0    1841082   749
> 
> The input errors and other numbers were consistent during the few
> minutes of testing in all 3 cases, but I cut it to a few lines for
> the sake of the mailing-list. Is this increase in input errors and
> drop in bytes throughput a problem? I guess the input errors are not
> good, when we can see that there are

Input errors probably means that whatever you're plugged into does not
support full-duplex (i.e. it's a hub), which is why autoselect selected
half-duplex.

-- 
	Dan Nelson
	dnelson@allantgroup.com

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