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Date:      Wed, 23 Feb 2005 21:30:54 -0600
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Jon Noack <noackjr@alumni.rice.edu>
Cc:        Mario Sergio Fujikawa Ferreira <lioux@freebsd.org>
Subject:   Re: FreeBSD 5-STABLE, MSI KT880 , fxp and SCB timeouts
Message-ID:  <20050224033053.GN253@dan.emsphone.com>
In-Reply-To: <421D46E0.6090001@alumni.rice.edu>
References:  <20050224020702.51073.qmail@exxodus.fedaykin.here> <421D46E0.6090001@alumni.rice.edu>

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In the last episode (Feb 23), Jon Noack said:
> On 02/23/05 20:06, Mario Sergio Fujikawa Ferreira wrote:
> >  My last motherboard burned down to ashes so I got myself a brand
> >(after 2 weeks) new MSI KT880. I am getting some weird results.
> >
> >  1) fxp intel etherxpress 10/100 network cards report SCB timeout
> >as well as achieving ridiculously low transfer rates of 600
> >Bytes/second. Well, I got 10 KBytes/sec once but that does not count
> >since a side box gets more than 50KB/s ;-) on the same hub. Oh, I've
> >already switched hub ports, rj45 cables and fxp cards.
> 
> Duplex mismatch?  You say "hub" and not "switch", so you might need
> to force the card to half-duplex.  Oddly enough, the fxp(4) man page
> doesn't include half-duplex as a media option.  Surely it supports
> it...

Autodetection on ethernet detects both speed and duplex, and
full-duplex and half-duplex are either/or, so if you force a speed and
don't force full-duplex, you get half-duplex by default.

-- 
	Dan Nelson
	dnelson@allantgroup.com



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