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Date:      Mon, 30 May 2005 22:56:22 +0200
From:      Sebastian Ahndorf <webmaster@it-is-warlock.de>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        Imobach ??? Sosa <imobachgs@banot.net>, freebsd-stable@freebsd.org
Subject:   Re: Poor network performance: a lot of timeouts
Message-ID:  <429B7DF6.8040704@it-is-warlock.de>
In-Reply-To: <20050530191843.GA82875@xor.obsecurity.org>
References:  <20050529221024.4fu2p4yjusk04k0g@mail.banot.net>	<20050529212705.GA64753@xor.obsecurity.org>	<1117447400.5384.4.camel@localhost.localdomain>	<20050530104928.GB79877@sr.se>	<1117465224.9934.7.camel@localhost.localdomain>	<429B44BD.7070806@pp.nic.fi> <20050530191843.GA82875@xor.obsecurity.org>

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Kris Kennaway wrote:
>>Both sides must have same config, autosense should work if there is no 
>>config possibility in other end.
> 
> 
> autosense may in fact not work, especially on low-quality NICs like rl.
> 

I don't agree to that.
I had similar problems with my network using a cheap switch with some 
realtek nics. I had the nics running 100baseTX Full Duplex.
Changing this to autosense made the problems gone.

Reason (as some people of the german questions-list told me):
Many cheap switches always send their autosensepakets, and have great 
problems if the nics connected to the switch do not response to the 
autosensepakets (cause they are configured to 10/100baseTX full/half 
duplex).
Also realtek nics are far away from being good nics, they work without 
problems with the autosensemode and a cheap switch for me (and many 
other people I know).

I would suggest the starter of this thread to use autosense with his nic 
(if not tested yet).

> Kris

Best regards
Sebastian



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