Skip site navigation (1)Skip section navigation (2)
Date:      Tue, 31 May 2005 11:52:10 +0900 (JST)
From:      Tod McQuillin <devin@spamcop.net>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        Imobach ??? Sosa <imobachgs@banot.net>, freebsd-stable@freebsd.org, Sebastian Ahndorf <webmaster@it-is-warlock.de>
Subject:   Re: Poor network performance: a lot of timeouts
Message-ID:  <20050531115114.I727@plexi.pun-pun.prv>
In-Reply-To: <20050530225340.GA34233@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> <429B7DF6.8040704@it-is-warlock.de> <20050530225340.GA34233@xor.obsecurity.org>

next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 30 May 2005, Kris Kennaway wrote:

> On Mon, May 30, 2005 at 10:56:22PM +0200, Sebastian Ahndorf wrote:
>> 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.
>
> Your one example does not disprove the statement.  I've seen this
> problem myself, and so have many others.

I found this document extremely helpful in understanding ethernet 
autonegotiation, especially the table on page 7:

https://myvision.flukenetworks.com/edocs/efile.asp?oid=2040882

Good luck,
-- 
Tod



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050531115114.I727>